linux: deploy a helper link containing abiversion

This makes life much easier for our card-kernel-write helper scripts.

Signed-off-by: Andreas Müller <schnitzeltony@gmail.com>

recipes-kernel/linux/linux%.bbappend

@@ -0,0 +1,8 @@
+kernel_do_deploy_append() {
+    # deploy an extra link containing abiversion - used by our
+    # card-kernel-write scripts
+    abilinkname=${type}-abiversion-${KERNEL_VERSION}
+    if [ -e $deployDir/${base_name}.bin ] ; then
+		ln -sf ${base_name}.bin $deployDir/${abilinkname}
+    fi
+}