msm: kgsl: Remove references to OOB_CPINIT

OOB CPINIT is not needed. In each case where we use it,
OOB_GPU can be used instead. Remove it's use where it's
not needed and replace with OOB_GPU where it is needed.

CRs-Fixed: 2120475
Change-Id: I9448ac520828b261631eff81205528f684a02ffe
Signed-off-by: Kyle Piefer <kpiefer@codeaurora.org>