meta-google: Add eMMC systemd service

This service launches eStoraged for the eMMC.

Tested:
Installed the image on a machine and confirmed that the systemd service
started automatically.

Signed-off-by: John Wedig <johnwedig@google.com>
Change-Id: I55567da8ef491af893e1749ee05d2f39fa01758b
diff --git a/meta-google/recipes-google/storage/emmc-service.bb b/meta-google/recipes-google/storage/emmc-service.bb
new file mode 100644
index 0000000..c95867c
--- /dev/null
+++ b/meta-google/recipes-google/storage/emmc-service.bb
@@ -0,0 +1,18 @@
+SUMMARY = "Storage management daemon for eMMC"
+PR = "r1"
+LICENSE = "Apache-2.0"
+LIC_FILES_CHKSUM = "file://${COREBASE}/meta/files/common-licenses/Apache-2.0;md5=89aea4e17d99a7cacdbeed46a0096b10"
+
+inherit systemd
+
+RDEPENDS:${PN} += "estoraged"
+
+SRC_URI += " file://emmc.service"
+
+SYSTEMD_PACKAGES = "${PN}"
+SYSTEMD_SERVICE:${PN} += "emmc.service"
+
+do_install:append() {
+  install -d ${D}${systemd_system_unitdir}
+  install -m 0644 ${WORKDIR}/emmc.service ${D}${systemd_system_unitdir}
+}
diff --git a/meta-google/recipes-google/storage/emmc-service/emmc.service b/meta-google/recipes-google/storage/emmc-service/emmc.service
new file mode 100644
index 0000000..5447251
--- /dev/null
+++ b/meta-google/recipes-google/storage/emmc-service/emmc.service
@@ -0,0 +1,10 @@
+[Unit]
+Description=Storage management daemon for eMMC
+
+[Service]
+Type=simple
+Restart=always
+ExecStart=/usr/bin/eStoraged -b /dev/mmcblk0
+
+[Install]
+WantedBy=multi-user.target