msm_fb: Adjust the delay values for easy-scale approach of backlight IC

On 8x25 EVB, during stress testing of suspend/resume, sometimes the
backlight doesn't come up. Fine tune the delay values used to program
the backlight IC into 1-wire mode so that the IC enters 1-wire mode
properly everytime.

Change-Id: I073f0101ddc057a1f3f59028ae171976a6965d15
Signed-off-by: Padmanabhan Komanduru <pkomandu@codeaurora.org>