update meta-supermicro layer for new bitbake

Signed-off-by: Ryan Sie <ryans@supermicro.com.tw>
Change-Id: I05c85576fad2dae9f9a3e90afdac7565d9cefcf4
diff --git a/meta-supermicro/meta-x11spi/recipes-phosphor/skeleton/obmc-libobmc-intf_%.bbappend b/meta-supermicro/meta-x11spi/recipes-phosphor/skeleton/obmc-libobmc-intf_%.bbappend
new file mode 100644
index 0000000..18a6314
--- /dev/null
+++ b/meta-supermicro/meta-x11spi/recipes-phosphor/skeleton/obmc-libobmc-intf_%.bbappend
@@ -0,0 +1 @@
+FILESEXTRAPATHS:prepend:x11spi := "${THISDIR}/${PN}:"