msm: kgsl: add condition to check gpuhtw_llc support

Avoid setting cache related domain attributes when
gpuhtw_llc not supported.

Change-Id: I3881e3a4e5ab06f075b1320717f43e9bc9208e45
Signed-off-by: Amit Kushwaha <kushwaha@codeaurora.org>
Signed-off-by: Vishwanath Raju K <vishk@codeaurora.org>