x86: Use X86_32BIT_INIT instead of X86_RESET_VECTOR

Use this new option to control the location of 32-bit init. This will allow
us to place this in SPL if needed.

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 804c539..1145e78 100644
--- a/arch/x86/cpu/intel_common/Makefile
+++ b/arch/x86/cpu/intel_common/Makefile
@@ -4,13 +4,15 @@
 # SPDX-License-Identifier:	GPL-2.0+
 #
 
-obj-$(CONFIG_HAVE_MRC) += car.o
+ifdef CONFIG_HAVE_MRC
+obj-$(CONFIG_$(SPL_)X86_32BIT_INIT) += car.o
+obj-$(CONFIG_$(SPL_)X86_32BIT_INIT) += me_status.o
+obj-$(CONFIG_$(SPL_)X86_32BIT_INIT) += report_platform.o
+obj-$(CONFIG_$(SPL_)X86_32BIT_INIT) += mrc.o
+endif
 obj-y += cpu.o
 obj-y += lpc.o
-obj-$(CONFIG_HAVE_MRC) += me_status.o
 ifndef CONFIG_TARGET_EFI
 obj-y += microcode.o
 endif
 obj-y += pch.o
-obj-$(CONFIG_HAVE_MRC) += report_platform.o
-obj-$(CONFIG_HAVE_MRC) += mrc.o