Platform: Rename RSS to RSE

Signed-off-by: Jamie Fox <jamie.fox@arm.com>
Change-Id: I9c5815d7a27f642105592fa9b813dbc3269fb7bd
diff --git a/build_helper/build_helper_config_maps.py b/build_helper/build_helper_config_maps.py
index c9022e2..d130d14 100644
--- a/build_helper/build_helper_config_maps.py
+++ b/build_helper/build_helper_config_maps.py
@@ -24,7 +24,7 @@
     "arm/musca_s1"                       : "MUSCA_S1",
     "arm/corstone1000"                   : "corstone1000",
     "arm/mps3/corstone310/fvp"           : "corstone310",
-    "arm/rss/tc"                         : "RSS",
+    "arm/rse/tc"                         : "RSE",
     "cypress/psoc64"                     : "psoc64",
     "lairdconnectivity/bl5340_dvk_cpuapp": "BL5340",
     "nordic_nrf/nrf5340dk_nrf5340_cpuapp": "nrf5340dk",