disp: msm: sde: update autorefresh disable sequence

Autorefresh might be still in enabled state after
write_ptr reached to display height. This patch
checks the autorefresh status bit and keeps polling
the bit till autorefresh sequence is in enabled
state. It times out after 1 second if autorefresh
is still in enabled state.

Change-Id: I5d4f4cb35e5cc8c680c1878f52cee385f709d764
Signed-off-by: Dhaval Patel <pdhaval@codeaurora.org>