Integration-test module for SCP-firmware
Fixes for AArch64 module and debugger:
- arch/aarch64: Return error if IAR queried outside ISR
- arch/aarch64: Support nested exceptions
- debugger: Support 64-bit builds
- arch/aarch64: Add support for FWK_CONSTRUCTOR functions
- arch/aarch64: Allow '0' as valid ISR parameter in interrupt registration
Introduce the integration test module:
- mod/integration_test: Introduce module
- prod/fvp_baser_aemv8r/test_timer: Introduce module
- prod/fvp_baser_aemv8r: Enable Integration-test and test-timer modules