S3 code in coreboot public folder.

1. Move the Stack to high memory.
2. Restore the MTRR before Coreboot jump to the wakeup vector.

Change-Id: I9872e02fcd7eed98e7f630aa29ece810ac32d55a
Signed-off-by: Zheng Bao <zheng.bao@amd.com>
Signed-off-by: zbao <fishbaozi@gmail.com>
Reviewed-on: http://review.coreboot.org/623
Tested-by: build bot (Jenkins)
Reviewed-by: Marc Jones <marcj303@gmail.com>

src/Kconfig

@@ -222,6 +222,10 @@ config HAVE_INIT_TIMER
 	default n if UDELAY_IO
 	default y
 
+config HIGH_SCRATCH_MEMORY_SIZE
+	hex
+	default 0x0
+
 config HAVE_MAINBOARD_RESOURCES
 	bool
 	default n