mdss_dsi_panel: keep the panel gpio active and don't trigger a reset

This way we will suffer minimum leakage when sweep2wake is being used.
All that is kept online here is the chip controlling the panel and touch panel.
That chip is probably some pmic but either way, keeping it online will cause
minimum leakage. This is an improvement upon the original patch by flar2 which
led to massive leakage from the display regulators since all were kept online.

Signed-off-by: Dennis Rassmann <showp1984@gmail.com>
weep2wake/doubletap2wake/touchscreen: Prepare for dt2w

Signed-off-by: Dennis Rassmann <showp1984@gmail.com>

Signed-off-by: Paul Reioux <reioux@gmail.com>