mvs: Fix to use rman_get_rid rather than non-existent rid argument

This got missed as it's not built in a normal tinderbox build.

This fixes building arm.armv7 ARMADAXP (marked NO_UNIVERSE).

Fixes: 9dbf5b0e6876 ("new-bus: Remove the 'rid' and 'type' arguments from BUS_RELEASE_RESOURCE")