Waking the GPU upon touch wastes power when the screen is being touched
in a way that does not induce animation or any actual need for GPU usage.
Instead of preemptively waking the GPU on touch input, wake it up upon
receiving a IOCTL_KGSL_GPU_COMMAND ioctl since it is a sign that the GPU
will soon be needed.
Change-Id: I6387083562578b229ea0913b5b2fa6562d4a85e9
Signed-off-by: Sultan Alsawaf <sultan@kerneltoast.com>