drivers/intel/fsp2_0: Add meaningful ERROR message

Add the "ERROR:" tag so that it ease debug effect.

TEST=Test tools like "suspend_stress_test" (specific to Chrome OS) can
identify the obvious coreboot ERROR prior running S3 resume test.

Change-Id: I64717ce0412d43697f42ea2122b932037d28dd48
Signed-off-by: Subrata Banik <subrata.banik@intel.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/49798
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
diff --git a/src/drivers/intel/fsp2_0/memory_init.c b/src/drivers/intel/fsp2_0/memory_init.c
index bddd07f..759bfa4 100644
--- a/src/drivers/intel/fsp2_0/memory_init.c
+++ b/src/drivers/intel/fsp2_0/memory_init.c
@@ -36,7 +36,7 @@
 
 	mrc_data = fsp_find_nv_storage_data(&mrc_data_size);
 	if (!mrc_data) {
-		printk(BIOS_ERR, "Couldn't find memory training data HOB.\n");
+		printk(BIOS_ERR, "ERROR: FSP_NON_VOLATILE_STORAGE_HOB missing!\n");
 		return;
 	}
 
@@ -48,7 +48,7 @@
 	 */
 	if (mrc_cache_stash_data(MRC_TRAINING_DATA, fsp_version, mrc_data,
 				mrc_data_size) < 0)
-		printk(BIOS_ERR, "Failed to stash MRC data\n");
+		printk(BIOS_ERR, "ERROR: Failed to stash MRC data\n");
 }
 
 static void do_fsp_post_memory_init(bool s3wake, uint32_t fsp_version)
@@ -64,8 +64,7 @@
 	} else if (cbmem_initialize_id_size(CBMEM_ID_FSP_RESERVED_MEMORY,
 				range_entry_size(&fsp_mem))) {
 		if (CONFIG(HAVE_ACPI_RESUME)) {
-			printk(BIOS_ERR,
-				"Failed to recover CBMEM in S3 resume.\n");
+			printk(BIOS_ERR, "ERROR: Failed to recover CBMEM in S3 resume.\n");
 			/* Failed S3 resume, reset to come up cleanly */
 			/* FIXME: A "system" reset is likely enough: */
 			full_reset();