Platform: Support isolation level 2 for MUSCA_A

- Add MUSCA_A TARGET_PLATFORM in ConfigCoreIPCTfmLevel2.cmake.
- Re-arrange the placement of secure partition in ARMCLANG linker file.
- Add start and end address for PSA and App RoT in ARMCLANG linker file.
- Add MPU config for App RoT.

Change-Id: If99dbda99b4c0b5c905bcf80fe9b6e19bbf9797e
Signed-off-by: Edison Ai <edison.ai@arm.com>
4 files changed