msm: kgsl: Enable UCHE dual command queue

UCHE dual command queue configuration was initially disabled as it
was resulting in a GPU hang. Re-enable UCHE dual command queue and
disable the almost full signal instead to fix the GPU hang.

Change-Id: I11b1ee02c31ba7eef3b0e460c307347379b62d90
Signed-off-by: Raghu Ananya Arabolu <rarabolu@codeaurora.org>