Recovery: swap XY on swipe controls

Devices such as the note 8 have a rotated screen and
need X and Y swapped to function right with swipe controls
Prohibit mounting/formatting swap partitions in recovery

You can't mount a swap partition, and the recovery doesn't support
formatting one at the moment.  Therefore, ensure that swap partitions
don't appear as useless, confusingly-named entries in the mounts menu.

Change-Id: Iefc33e6b0b09deb9effd2e8a93fb825af4a338a3