drivers/mrc_cache: move mrc_cache support to drivers

There's nothing intel-specific about the current mrc_cache support.
It's logic manages saving non-volatile areas into the boot media.
Therefore, expose it to the rest of the system for any and all to
use.

BUG=b:69614064

Change-Id: I3b331c82a102f88912a3e10507a70207fb20aecc
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://review.coreboot.org/22901
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
diff --git a/src/drivers/intel/fsp1_1/romstage.c b/src/drivers/intel/fsp1_1/romstage.c
index e6dec25..81939c4 100644
--- a/src/drivers/intel/fsp1_1/romstage.c
+++ b/src/drivers/intel/fsp1_1/romstage.c
@@ -28,11 +28,11 @@
 #include <ec/google/chromeec/ec_commands.h>
 #include <elog.h>
 #include <fsp/romstage.h>
+#include <mrc_cache.h>
 #include <reset.h>
 #include <program_loading.h>
 #include <romstage_handoff.h>
 #include <smbios.h>
-#include <soc/intel/common/mrc_cache.h>
 #include <stage_cache.h>
 #include <string.h>
 #include <timestamp.h>