arch/x86/cpu: Call x86_cpu_reinit_f for 64-bits

As both CONFIG_X86_RUN_64BIT and X86_RUN_64BIT_NO_SPL cases run U-Boot
in 64-bit mode with the CPU fully initialized already.

Signed-off-by: Jeremy Compostella <jeremy.compostella@intel.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
diff --git a/arch/x86/cpu/coreboot/coreboot.c b/arch/x86/cpu/coreboot/coreboot.c
index fa7430b..d0719d1 100644
--- a/arch/x86/cpu/coreboot/coreboot.c
+++ b/arch/x86/cpu/coreboot/coreboot.c
@@ -22,7 +22,7 @@
 {
 	int ret;
 
-	ret = IS_ENABLED(CONFIG_X86_RUN_64BIT) ? x86_cpu_reinit_f() :
+	ret = IS_ENABLED(CONFIG_X86_64) ? x86_cpu_reinit_f() :
 		x86_cpu_init_f();
 	if (ret)
 		return ret;