sdk: add missing kernel include files

Signed-off-by: Felix Fietkau <[email protected]>

SVN-Revision: 43621

target/sdk/Makefile

@@ -50,6 +50,7 @@ KERNEL_FILES_ARCH = \
 	Kbuild.platforms \
 	*/Platform \
 	include \
+	*/include \
 	scripts \
 	kernel/asm-offsets.s