feat(tc): enable RSS backend based measured boot

Measurements taken during boot are stored in RSS.
These measurements are included in the platform
attestation token.

Change-Id: Iac3356f813fb417315681c718839319832a76191
Signed-off-by: David Vincze <david.vincze@arm.com>
Signed-off-by: Tamas Ban <tamas.ban@arm.com>
diff --git a/plat/arm/board/tc/tc_plat.c b/plat/arm/board/tc/tc_plat.c
index a9668e1..77db023 100644
--- a/plat/arm/board/tc/tc_plat.c
+++ b/plat/arm/board/tc/tc_plat.c
@@ -135,7 +135,7 @@
 }
 #endif /* SPM_MM && defined(IMAGE_BL31) */
 
-#if TRUSTED_BOARD_BOOT
+#if TRUSTED_BOARD_BOOT || MEASURED_BOOT
 int plat_get_mbedtls_heap(void **heap_addr, size_t *heap_size)
 {
 	assert(heap_addr != NULL);