Revert "Revert "msm: kgsl: Add a command dispatcher to manage the ringbuffer""

This reverts commit d95171091bd0e63bc845406a8746bc751f569a64.
Revert "Revert "msm: kgsl: Add a new command submission API""

This reverts commit 684335cb12e18e4d932504e30034465f96453dde.
Revert "Revert "msm: kgsl: Don't process events if the timestamp hasn't changed""

This reverts commit f8ff679de19466e84cfa3b41126e8e027784bae9.
Revert "Revert "msm: kgsl: add kgsl_sync_fence_waiter for server side sync""

This reverts commit b2f6dbe0d44cd88d033537a012aa367102ca8f65.
Revert "Revert "msm: kgsl: Add support for KGSL_CMD_SYNCPOINT_TYPE_FENCE""

This reverts commit 6c370a510dfa7ace5aec7c73eb96fd88c2078e5e.