msm: kgsl: Add a check for A650 while initializing LLCC

For A650, a GBIF register needs to be programmed to initialize
the sub-cache ID for GPU blocks. Add a check so this gets routed
through the correct path.

Change-Id: Ibad00f587d5a20e28f3f848f5ac8adf1a09c7616
Signed-off-by: Urvashi Agrawal <urvaagra@codeaurora.org>