Move script and systemd service files into repo

Move the obmc-flash-bios script and systemd service files from
openbmc/openbmc to the local repo.

Tested: PNOR code update was successful on witherspoon.

Change-Id: Ibb7adba0638b8205173cb0ec4d4d61f2aeb6ce28
Signed-off-by: Adriana Kobylak <anoo@us.ibm.com>
diff --git a/ubi/obmc-flash-bios-ubiattach.service b/ubi/obmc-flash-bios-ubiattach.service
new file mode 100644
index 0000000..f0ed3d8
--- /dev/null
+++ b/ubi/obmc-flash-bios-ubiattach.service
@@ -0,0 +1,7 @@
+[Unit]
+Description=Attach the PNOR mtd device to UBI
+
+[Service]
+Type=oneshot
+RemainAfterExit=yes
+ExecStart=/usr/bin/obmc-flash-bios ubiattach