s2w/dt2w: Add power key toggle

Signed-off-by: Chester Kener <Cl3Kener@gmail.com>
Signed-off-by: Chet Kener <Cl3Kener@gmail.com>

Conflicts:
	drivers/video/msm/mdss/mdss_dsi_panel.c

Signed-off-by: Chet Kener <Cl3Kener@gmail.com>

Conflicts:
	drivers/video/msm/mdss/mdss_dsi_panel.c