msm: kgsl: Add the f2h daemon

This daemon is a bottom half handler for asynchronous packets
originating from GMU for example TS_RETIRE, CONTEXT_BAD and
F2H_MSG_GMU_CNTR_REGISTER. The way it works is -the interrupt
handler snoops all the packets coming from GMU, processes the
acks inline but copies the aforementioned packets to a queue
and wakes up the daemon to process those.

Change-Id: Ib2c9d470a9c4c64bc44409015201adaff398edd8
Signed-off-by: Harshdeep Dhatt <hdhatt@codeaurora.org>