x86: Add Intel Cougar Canyon 2 board

This adds basic support to Intel Cougar Canyon 2 board, a board
based on Chief River platform with an Ivy Bridge processor and
a Panther Point chipset.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Acked-by: Simon Glass <sjg@chromium.org>
diff --git a/arch/x86/dts/Makefile b/arch/x86/dts/Makefile
index 64e5694..84feb19 100644
--- a/arch/x86/dts/Makefile
+++ b/arch/x86/dts/Makefile
@@ -5,6 +5,7 @@
 dtb-y += bayleybay.dtb \
 	chromebook_link.dtb \
 	chromebox_panther.dtb \
+	cougarcanyon2.dtb \
 	crownbay.dtb \
 	efi.dtb \
 	galileo.dtb \