soc/intel/apollolake: Use SMM library to get tseg region information

This patch uses smm common library function to get tseg base
address and size. Hence removing definitions of smm_region()
from soc directory.

BRANCH=none
BUG=b:63974384
TEST=Build and boot reef successfully.

Change-Id: I091ca90cf576c0da35cf3fe010f8c22a18ef82d9
Signed-off-by: Subrata Banik <subrata.banik@intel.com>
Reviewed-on: https://review.coreboot.org/21291
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>

src/soc/intel/apollolake/cpu.c

@@ -178,7 +178,7 @@ static void get_smm_info(uintptr_t *perm_smbase, size_t *perm_smsize,
 	const uint32_t rmask = ~((1 << 12) - 1);
 
 	/* Initialize global tracking state. */
-	smm_region(&smm_base, &smm_size);
+	smm_region_info(&smm_base, &smm_size);
 	smm_subregion(SMM_SUBREGION_HANDLER, &handler_base, &handler_size);
 
 	relo_attrs.smbase = (uint32_t)smm_base;