x86: Allow 16-bit init to be in TPL

At present we support having 16-bit init be in SPL or U-Boot proper, but
not TPL. Add support for this so that TPL can boot.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
diff --git a/arch/x86/cpu/intel_common/Makefile b/arch/x86/cpu/intel_common/Makefile
index bf798c2..80fbc7a 100644
--- a/arch/x86/cpu/intel_common/Makefile
+++ b/arch/x86/cpu/intel_common/Makefile
@@ -3,7 +3,7 @@
 # Copyright (c) 2016 Google, Inc
 
 ifdef CONFIG_HAVE_MRC
-obj-$(CONFIG_$(SPL_)X86_32BIT_INIT) += car.o
+obj-$(CONFIG_$(SPL_TPL_)X86_16BIT_INIT) += car.o
 obj-$(CONFIG_$(SPL_)X86_32BIT_INIT) += me_status.o
 obj-$(CONFIG_$(SPL_)X86_32BIT_INIT) += report_platform.o
 obj-$(CONFIG_$(SPL_)X86_32BIT_INIT) += mrc.o