msm: kgsl: Check for valid address on indirect buffer submission

When an indirect buffer is submitted to the kernel, check if the
indirect buffer address is in a valid address range.
This helps avoid GPU page faults when GPU executes
these indirect buffers.

Change-Id: I6e668ecbcc0d27a7bf872c73faa3fea7b60b1f95
Acked-by: Sunil Kumar <sdevalok@quicinc.com>
Signed-off-by: Tarun Karra <tkarra@codeaurora.org>