panfrost: LogicOp fixes and non 8-bit format support
With the previous LogicOp commit almost half of the blend modes were broken because the surplus bits were not cleared after an inot.
16 and 32-bit per channel formats now work, and other formats such as R11G11B10 should work.
Fixes: 068806c9 ("panfrost: LogicOp support")
Edited by Icecream95