linux-ti-staging: Make files directory version specific

* As we add the next version of the linux-ti-staging kernel there
  will be a different list of config fragments, removed patches,
  etc.  For this reason it makes sense to have the file directory
  be version specific

Signed-off-by: Chase Maupin <Chase.Maupin@ti.com>
Signed-off-by: Denys Dmytriyenko <denys@ti.com>

recipes-kernel/linux/linux-ti-staging_3.12.bb

@@ -8,6 +8,9 @@ inherit kernel
 require recipes-kernel/linux/linux-dtb.inc
 require recipes-kernel/linux/setup-defconfig.inc
 
+# Look in the generic major.minor directory for files
+FILESEXTRAPATHS_append := "${THISDIR}/${PN}-3.12:"
+
 # Pull in the devicetree files into the rootfs
 RDEPENDS_kernel-base += "kernel-devicetree"