systemd: add systemd-bootconf recipe

Reuses our systemd-boot-cfg bbclass to generate systemd-boot
configuration files.

(From OE-Core rev: 8bf86db982b4304c47b1d83ea8b2fc63eaa64b20)

Signed-off-by: California Sullivan <california.l.sullivan@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-core/systemd/systemd-bootconf_1.00.bb

@@ -0,0 +1,31 @@
+LICENSE = "MIT"
+LIC_FILES_CHKSUM = "file://${COREBASE}/meta/COPYING.MIT;md5=3da9cfbcb788c80a0384361b4de20420"
+SUMMARY = "Basic systemd-boot configuration files"
+
+RPROVIDES_${PN} += "virtual/systemd-bootconf"
+
+inherit systemd-boot-cfg
+
+S = "${WORKDIR}"
+
+LABELS = "boot"
+
+ROOT ?= "root=/dev/sda2"
+APPEND_append = " ${ROOT}"
+
+python do_configure() {
+    bb.build.exec_func('build_efi_cfg', d)
+}
+
+do_configure[vardeps] += "APPEND"
+
+do_install() {
+	install -d ${D}/boot
+	install -d ${D}/boot/loader
+	install -d ${D}/boot/loader/entries
+	install loader.conf ${D}/boot/loader/
+	rm loader.conf
+	install *.conf ${D}/boot/loader/entries/
+}
+
+FILES_${PN} = "/boot/loader/* /boot/loader/entries/*"