Move patches for kernel to dynami layers

Patches were tested only with linux-stable, so move them and add only if
linux-stable is taken.

TODO: check patches with linux-yocto, too.

Signed-off-by: Stefano Babic <sbabic@denx.de>

conf/layer.conf

@@ -27,4 +27,5 @@ BBFILES += "${@' '.join('${LAYERDIR}/dynamic-layers/%s/recipes*/*/*.bb' % layer
 
 BBFILES_DYNAMIC += " \
     security:${LAYERDIR}/dynamic-layers/security/*/*/*.bb \
+    mainlinecommon-layer:${LAYERDIR}/dynamic-layers/mainlinecommon-layer/*/*/*.bb \
 "