msm: Clear all sw use flags for UBWC combinations

msm: Clear all sw use flags for UBWC combinations

Whether rarely or often, we can't support any kind of sw access if the
buffer is UBWC compressed.  We could potentially add support for
blitting in and out of the buffer, but for now just allocate linear.

BUG=b:167934919
TEST=Buffers allocated with any SW access use flag don't get UBWC

Change-Id: Ic9c1d86a124e24b7bc4aa259c62d8c4882c487b2
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/minigbm/+/2397084
Tested-by: Kristian H. Kristensen <hoegsberg@chromium.org>
Reviewed-by: Rob Clark <robdclark@chromium.org>
Reviewed-by: Gurchetan Singh <gurchetansingh@chromium.org>
Commit-Queue: Kristian H. Kristensen <hoegsberg@chromium.org>