meta-mellanox: meta-msn: add msn specific defconfig layer.

Add msn specific defconfig layer. It adds configs used
by msn boards.

Change-Id: Idba0423d554b50c61801c830b7b9daab73633725
Signed-off-by: Mykola Kostenok <c_mykolak@mellanox.com>
diff --git a/meta-msn/recipes-kernel/linux/linux-obmc_%.bbappend b/meta-msn/recipes-kernel/linux/linux-obmc_%.bbappend
new file mode 100644
index 0000000..35e9d9b
--- /dev/null
+++ b/meta-msn/recipes-kernel/linux/linux-obmc_%.bbappend
@@ -0,0 +1,3 @@
+FILESEXTRAPATHS_prepend := "${THISDIR}/${PN}:"
+
+SRC_URI += "file://msn.cfg"
\ No newline at end of file