x86: Fix ACPI resume dependency to MRC cache

In an S3 resume path, MRC cache is mandatory. Enforce the dependency
in the Kconfig.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>

arch/x86/Kconfig

@@ -664,6 +664,7 @@ endmenu
 
 config HAVE_ACPI_RESUME
 	bool "Enable ACPI S3 resume"
+	select ENABLE_MRC_CACHE
 	help
 	  Select this to enable ACPI S3 resume. S3 is an ACPI-defined sleeping
 	  state where all system context is lost except system memory. U-Boot