msm: kgsl: Add a resume call for loading the zap shader ucode

Retention is not supported for the zap shader ucode base registers.
As a result they lose their value when the GPU goes to slumber and
we need to do an scm_call to program those registers with the
appropriate values again during wake up. Also, crash the device if
at any point we are not able to load the zap shader since the GPU
cannot boot correctly without it.

Change-Id: If0535e64dd3a6ddad324eac8f50c0eb1af5d9cbe
Signed-off-by: Shrenuj Bansal <shrenujb@codeaurora.org>