clk: msm: gdsc: Add support to reset the AON logic for GPU gdsc

On MSMCOBALT, while enabling the gpu_gx_gdsc, the DEMET cells
need to be explicitly reset by using the domain_addr register.
Add support in the gdsc driver to do this.

CRs-Fixed: 922984
Change-Id: I145a581a50719427b7303720a48cd421e2e1ef45
Signed-off-by: Deepak Katragadda <dkatraga@codeaurora.org>