msm: kgsl: Issue packet to set shader bases on A20x/220 GPU

When GMEM save is not performed, the events to reuse shader space
can get dropped. This make the CP block to wait indefinitely
causing a hang. To unblock this, issue a packet to set shader bases.
This applies only to A20x/220 GPU.

CRs-fixed: 365465
Change-Id: I3ea6a58821b238706f167845380370d5bd19c4b3
Signed-off-by: Ranjhith Kalisamy <ranjhith@codeaurora.org>