Configs: Restructure Corstone300 configurations

The CS300 platform (an547 and an552) has been reorganized
in the TF-M, this commit sync the configs with the
I06bf37cdffb55d411d523b0635e8ac9c10f3fefa change.

This includes:
- Rename an552 to corstone300/an552
- Rename an547 to corstone300/an547
- Added corstone300/fvp (which is aligned with an552)
- Changed the lava config to load the binary to the QSPI

Change-Id: I829fa054879661f5d45a2af18618f5dddfebaa06
Signed-off-by: Bence Balogh <bence.balogh@arm.com>
diff --git a/build_helper/build_helper_config_maps.py b/build_helper/build_helper_config_maps.py
index 58fed95..4ad9914 100644
--- a/build_helper/build_helper_config_maps.py
+++ b/build_helper/build_helper_config_maps.py
@@ -17,8 +17,9 @@
     "arm/mps2/an519"                     : "AN519",
     "arm/mps2/an521"                     : "AN521",
     "arm/mps3/an524"                     : "AN524",
-    "arm/mps3/an547"                     : "AN547",
-    "arm/mps3/an552"                     : "AN552",
+    "arm/mps3/corstone300/fvp"           : "CS300_FVP",
+    "arm/mps3/corstone300/an547"         : "CS300_AN547",
+    "arm/mps3/corstone300/an552"         : "CS300_AN552",
     "arm/musca_b1"                       : "MUSCA_B1",
     "arm/musca_s1"                       : "MUSCA_S1",
     "arm/corstone1000"                   : "corstone1000",