media: ipu6: Drop MMU hardware initialisation in probe()

media: ipu6: Drop MMU hardware initialisation in probe()

The MMU hardware is initialised and cleaned up in the runtime PM resume
callbacks. Do not do this in probe().

Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Reviewed-by: Bingbu Cao <bingbu.cao@intel.com>
Tested-by: Mehdi Djait <mehdi.djait@linux.intel.com> # Dell XPS 9315
Reviewed-by: Mehdi Djait <mehdi.djait@linux.intel.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>