Merge changes from topic "rmmd-graceful-exit" into integration

* changes:
  fix(rmmd): remove the assert check for RMM_BASE
  fix(std_svc): continue boot if rmmd_setup fails
  fix(rmmd): ignore SMC FID when RMM image is not present
  fix(rmmd): fail gracefully if RME is not enabled
  fix(rmmd): handle RMMD manifest loading failure