feat(tc): add MHUv3 addresses between RSS and AP

TC3 is upgraded to MHUv3. This patch adds the address of the MHU
channel to be used by TF-A for communications with the RSS.

Change-Id: I1bf5d72dc92bcd9d0509ba806095b24293875e85
Signed-off-by: Jackson Cooper-Driver <jackson.cooper-driver@arm.com>
Signed-off-by: Leo Yan <leo.yan@arm.com>
diff --git a/plat/arm/board/tc/include/platform_def.h b/plat/arm/board/tc/include/platform_def.h
index dcae95f..0cf7500 100644
--- a/plat/arm/board/tc/include/platform_def.h
+++ b/plat/arm/board/tc/include/platform_def.h
@@ -298,9 +298,14 @@
 #endif /* TARGET_PLATFORM == 3 */
 #define PLAT_MHUV2_BASE			PLAT_CSS_MHU_BASE
 
-/* TC2: AP<->RSE MHUs */
+/* AP<->RSS MHUs */
+#if TARGET_PLATFORM <= 2
 #define PLAT_RSE_AP_SND_MHU_BASE	UL(0x2A840000)
 #define PLAT_RSE_AP_RCV_MHU_BASE	UL(0x2A850000)
+#elif TARGET_PLATFORM == 3
+#define PLAT_RSE_AP_SND_MHU_BASE	UL(0x49000000)
+#define PLAT_RSE_AP_RCV_MHU_BASE	UL(0x49100000)
+#endif
 
 #define CSS_SYSTEM_PWR_DMN_LVL		ARM_PWR_LVL2
 #define PLAT_MAX_PWR_LVL		ARM_PWR_LVL1