feat(tc): populate HW_CONFIG in BL31

BL2 passes FW_CONFIG to BL31 which contains information
about different DTBs present. BL31 then uses FW_CONFIG
to get the base address of HW_CONFIG and populate fconf.

Signed-off-by: Usama Arif <usama.arif@arm.com>
Change-Id: I0b4fc83e6e0a0b9401f692516654eb9a3b037616
diff --git a/plat/arm/board/tc/tc_plat.c b/plat/arm/board/tc/tc_plat.c
index 3863a0a..a9668e1 100644
--- a/plat/arm/board/tc/tc_plat.c
+++ b/plat/arm/board/tc/tc_plat.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2020, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2020-2021, ARM Limited and Contributors. All rights reserved.
  *
  * SPDX-License-Identifier: BSD-3-Clause
  */
@@ -63,6 +63,7 @@
 	ARM_MAP_SHARED_RAM,
 	V2M_MAP_IOFPGA,
 	TC_MAP_DEVICE,
+	PLAT_DTB_DRAM_NS,
 #if SPM_MM
 	ARM_SPM_BUF_EL3_MMAP,
 #endif