Move UBI service files into repo

Move the service files for the UBI layout from the openbmc/openbmc
repo to the local one.

Tested: The service files are installed in /lib/systemd/system/ and
        code update on Witherspoon is successful.

Change-Id: I988045886fadbd2216ca91aba952a40ca1228e33
Signed-off-by: Adriana Kobylak <anoo@us.ibm.com>
diff --git a/ubi/obmc-flash-bmc-ubirw.service b/ubi/obmc-flash-bmc-ubirw.service
new file mode 100644
index 0000000..93679b0
--- /dev/null
+++ b/ubi/obmc-flash-bmc-ubirw.service
@@ -0,0 +1,7 @@
+[Unit]
+Description=Create BMC read-write ubi volume
+
+[Service]
+Type=oneshot
+RemainAfterExit=no
+ExecStart=/usr/bin/obmc-flash-bmc ubirw {RW_MTD} rwfs {RW_SIZE}