mdss:mdss_dsi_panel.c: add s2wake/dt2wake screen on/off hooks

Signed-off-by: Paul Reioux <reioux@gmail.com>
sweep2wake/doubletap2wake: adapt for falcon_umts (aka Moto G)

Signed-off-by: Paul Reioux <reioux@gmail.com>
doubletap2wake: Add user selected feather radius

Conflicts:
	drivers/input/touchscreen/doubletap2wake.c
dt2w/s2w fix again