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>

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

arch/x86/lib/init_helpers.c

@@ -19,7 +19,7 @@ __weak ulong board_get_usable_ram_top(ulong total_size)
 
 int init_cache_f_r(void)
 {
-#if defined(CONFIG_X86_RESET_VECTOR) & !defined(CONFIG_HAVE_FSP)
+#if CONFIG_IS_ENABLED(X86_32BIT_INIT) && !defined(CONFIG_HAVE_FSP)
 	int ret;
 
 	ret = mtrr_commit(false);