Add an AM2R2 entry in to the src/arch/i386/Makefile.inc.

Signed-off-by: Zheng Bao <zheng.bao@amd.com>

Index: src/arch/i386/Makefile.inc
===================================================================
--- src/arch/i386/Makefile.inc	(revision 5210)
+++ src/arch/i386/Makefile.inc	(working copy)
@@ -108,6 +108,9 @@
 ifeq ($(CONFIG_CPU_AMD_SOCKET_F_1207),y)
 crt0s += $(src)/cpu/amd/car/cache_as_ram.inc
 endif
+ifeq ($(CONFIG_CPU_AMD_SOCKET_AM2R2),y)
+crt0s += $(src)/cpu/amd/car/cache_as_ram.inc
+endif
 ifeq ($(CONFIG_CPU_AMD_SOCKET_AM2),y)
 crt0s += $(src)/cpu/amd/car/cache_as_ram.inc
 endif