rockchip: Add basic support for jerry

This builds and displays an SPL message, but does not function beyond that.

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/board/google/common/Makefile b/board/google/common/Makefile
index b38bc14..2de2799 100644
--- a/board/google/common/Makefile
+++ b/board/google/common/Makefile
@@ -4,4 +4,4 @@
 # SPDX-License-Identifier:	GPL-2.0+
 #
 
-obj-y += early_init.o
+obj-$(CONFIG_X86) += early_init.o