Configs: Rename corstone300 configurations

The configurations has been renamed in the
I829fa054879661f5d45a2af18618f5dddfebaa06 change.

Change-Id: Idaa8c1da666e6afa4e12dd810349e506bc083173
Signed-off-by: Bence Balogh <bence.balogh@arm.com>
4 files changed