systemd: Fix path to modules-load.d et al

Following 4a56315a990b ("path: use ROOTPREFIX properly"), the paths to
sysusers.d, sysctl.d binfmt.d and modules-load.d changed to /lib when
building without usrmerge, which aoppears to be an inadvertent ABI
change. Undo this change and track upstream:

  https://github.com/systemd/systemd/issues/16773

(From OE-Core rev: a2b68ba14fb97349d3ebc71e5ca96a340aec243e)

Signed-off-by: Alex Kiernan <alex.kiernan@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-core/systemd/systemd/0001-Use-PREFIX-ROOTPREFIX-correctly.patch

@@ -0,0 +1,81 @@
+From 2868e3b72d4ac02860e380d70c9af0d61a985790 Mon Sep 17 00:00:00 2001
+From: Alex Kiernan <alex.kiernan@gmail.com>
+Date: Sun, 16 Aug 2020 16:07:12 +0000
+Subject: [PATCH] Use PREFIX/ROOTPREFIX correctly
+
+Signed-off-by: Alex Kiernan <alex.kiernan@gmail.com>
+Upstream-status: Pending [https://github.com/systemd/systemd/issues/16773]
+---
+ meson.build                      | 1 +
+ src/core/systemd.pc.in           | 8 ++++----
+ src/libsystemd/sd-path/sd-path.c | 8 ++++----
+ 3 files changed, 9 insertions(+), 8 deletions(-)
+
+diff --git a/meson.build b/meson.build
+index dbbddb68e232..18618dba0623 100644
+--- a/meson.build
++++ b/meson.build
+@@ -226,6 +226,7 @@ conf.set_quoted('SYSTEMD_SHUTDOWN_BINARY_PATH',               join_paths(rootlib
+ conf.set_quoted('SYSTEMCTL_BINARY_PATH',                      join_paths(rootbindir, 'systemctl'))
+ conf.set_quoted('SYSTEMD_TTY_ASK_PASSWORD_AGENT_BINARY_PATH', join_paths(rootbindir, 'systemd-tty-ask-password-agent'))
+ conf.set_quoted('SYSTEMD_STDIO_BRIDGE_BINARY_PATH',           join_paths(bindir, 'systemd-stdio-bridge'))
++conf.set_quoted('PREFIX',                                     prefixdir)
+ conf.set_quoted('ROOTPREFIX',                                 rootprefixdir)
+ conf.set_quoted('RANDOM_SEED_DIR',                            randomseeddir)
+ conf.set_quoted('RANDOM_SEED',                                join_paths(randomseeddir, 'random-seed'))
+diff --git a/src/core/systemd.pc.in b/src/core/systemd.pc.in
+index 8424837824b5..410a126317ad 100644
+--- a/src/core/systemd.pc.in
++++ b/src/core/systemd.pc.in
+@@ -65,16 +65,16 @@ systemdshutdowndir=${systemd_shutdown_dir}
+ tmpfiles_dir=${prefix}/lib/tmpfiles.d
+ tmpfilesdir=${tmpfiles_dir}
+ 
+-sysusers_dir=${rootprefix}/lib/sysusers.d
++sysusers_dir=${prefix}/lib/sysusers.d
+ sysusersdir=${sysusers_dir}
+ 
+-sysctl_dir=${rootprefix}/lib/sysctl.d
++sysctl_dir=${prefix}/lib/sysctl.d
+ sysctldir=${sysctl_dir}
+ 
+-binfmt_dir=${rootprefix}/lib/binfmt.d
++binfmt_dir=${prefix}/lib/binfmt.d
+ binfmtdir=${binfmt_dir}
+ 
+-modules_load_dir=${rootprefix}/lib/modules-load.d
++modules_load_dir=${prefix}/lib/modules-load.d
+ modulesloaddir=${modules_load_dir}
+ 
+ catalog_dir=${prefix}/lib/systemd/catalog
+diff --git a/src/libsystemd/sd-path/sd-path.c b/src/libsystemd/sd-path/sd-path.c
+index 736795d1d797..3572916dc073 100644
+--- a/src/libsystemd/sd-path/sd-path.c
++++ b/src/libsystemd/sd-path/sd-path.c
+@@ -371,19 +371,19 @@ static int get_path(uint64_t type, char **buffer, const char **ret) {
+                 return 0;
+ 
+         case SD_PATH_SYSUSERS:
+-                *ret = ROOTPREFIX "/lib/sysusers.d";
++                *ret = PREFIX "/lib/sysusers.d";
+                 return 0;
+ 
+         case SD_PATH_SYSCTL:
+-                *ret = ROOTPREFIX "/lib/sysctl.d";
++                *ret = PREFIX "/lib/sysctl.d";
+                 return 0;
+ 
+         case SD_PATH_BINFMT:
+-                *ret = ROOTPREFIX "/lib/binfmt.d";
++                *ret = PREFIX "/lib/binfmt.d";
+                 return 0;
+ 
+         case SD_PATH_MODULES_LOAD:
+-                *ret = ROOTPREFIX "/lib/modules-load.d";
++                *ret = PREFIX "/lib/modules-load.d";
+                 return 0;
+ 
+         case SD_PATH_CATALOG:
+-- 
+2.17.1
+

meta/recipes-core/systemd/systemd_246.bb

@@ -20,6 +20,7 @@ SRC_URI += "file://touchscreen.rules \
            file://99-default.preset \
            file://0001-binfmt-Don-t-install-dependency-links-at-install-tim.patch \
            file://0003-implment-systemd-sysv-install-for-OE.patch \
+           file://0001-Use-PREFIX-ROOTPREFIX-correctly.patch \
            "
 
 # patches needed by musl