systemd: Set the default firmware path to enable firmware loading in udev

After some breakage in udev the kernel gained direct firmware loading.
For older kernels (e.g. 3.2 in my case) udev still needs to load the
firmware. Firmware loading is enabled once a default firmware path is
set. Apply a compile fix from the upstream project.

(From OE-Core rev: 2009c6899d7d4ddd71350b1026a27336dc3a94b8)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-core/systemd/systemd_199.bb

@@ -9,6 +9,7 @@ LIC_FILES_CHKSUM = "file://LICENSE.GPL2;md5=751419260aa954499f7abaabaa882bbe \
 PROVIDES = "udev"
 
 PE = "1"
+PR = "r2"
 
 DEPENDS = "kmod docbook-sgml-dtd-4.1-native intltool-native gperf-native acl readline dbus libcap libcgroup tcp-wrappers glib-2.0"
 DEPENDS += "${@base_contains('DISTRO_FEATURES', 'pam', 'libpam', '', d)}"
@@ -26,6 +27,7 @@ SRC_URI = "http://www.freedesktop.org/software/systemd/systemd-${PV}.tar.xz \
            file://0002-readahead-chunk-on-spinning-media.patch \
            file://0003-readahead-cleanups.patch \
            file://0013-systemd-sysctl-Handle-missing-etc-sysctl.conf-proper.patch \
+           file://199-firmware.patch \
            file://init \
           "
 SRC_URI[md5sum] = "4bb13f84ce211e93f0141774a90a2322"
@@ -67,6 +69,7 @@ EXTRA_OECONF = " --with-rootprefix=${base_prefix} \
                  --disable-microhttpd \
                  --without-python \
                  --with-sysvrcnd-path=${sysconfdir} \
+                 --with-firmware-path=/lib/firmware \
                  ac_cv_path_KILL=${base_bindir}/kill \
                "
 # uclibc does not have NSS