refactor(sve): refine spm test config

Rename run_config/fvp-spm.sve+amu to run_config/fvp-spm.sve
Remove unnecessary tftf_config/fvp-default-sve
Rename the SPM SVE test configs accordingly.
Refine tf_config/fvp-spm-sve build options.

Signed-off-by: Olivier Deprez <olivier.deprez@arm.com>
Change-Id: I41039be6f6f513bcd9ff5db2b0dbf63153996d53
6 files changed