refactor(tc): change all occurrences of RSS to RSE

Changes all occurrences of "RSS" and "rss" in the code and build files
to "RSE" and "rse".

Signed-off-by: Tamas Ban <tamas.ban@arm.com>
Change-Id: Idec0bf7a90ae381f5bc968e1bb167daace24a11f
diff --git a/plat/arm/board/tc/tc_plat.c b/plat/arm/board/tc/tc_plat.c
index e5d05c4..fed14f7 100644
--- a/plat/arm/board/tc/tc_plat.c
+++ b/plat/arm/board/tc/tc_plat.c
@@ -165,7 +165,7 @@
 
 static sds_region_desc_t tc_sds_regions[] = {
 	{ .base = PLAT_ARM_SDS_MEM_BASE },
-	{ .base = PLAT_ARM_RSS_AP_SDS_MEM_BASE },
+	{ .base = PLAT_ARM_RSE_AP_SDS_MEM_BASE },
 };
 
 sds_region_desc_t *plat_sds_get_regions(unsigned int *region_count)