Fix Mips bug.
Fix Mips bug.

The source and destination addresses were swapped, causing access errors.

Bug: 21759492
(cherry picked from commit a7db682f20dedc53c6ded05d870eb2490d257fe1)

Change-Id: I7e7e98918577fc708c09f195842a6088df4f40ee

geekboxzone/mmallow_external_libunwind,SyndicateRogue/libunwind,geekboxzone/mmallow_external_libunwind,SyndicateRogue/libunwind,geekboxzone/mmallow_external_libunwind,SyndicateRogue/libunwind