msm: kgsl: Dump PWR_COL_PREEMPT_KEEPALIVE on wait for lowest idle timeout

On A660 GPU, PWR_COL_PREEMPT_KEEPALIVE register is used to disallow
ifpc during preemption trigger. Dump this register also in case of
wait for lowest idle timeout to capture this ifpc abort reason.

Change-Id: Ide6bef3169987f17ec6a761e9735caef1c5deaa7
Signed-off-by: Deepak Kumar <dkumar@codeaurora.org>