msm_fb: display: Call correct gpio API for backlight control

Use the correct gpio API gpio_set_value() instead of
gpio_set_value_cansleep()for backlight control as the backlight
sequence is called from IRQ context.

CRs-fixed: 357005
Change-Id: Ibcc648f676dc62a74988194a18f548a6d5786565
Signed-off-by: Padmanabhan Komanduru <pkomandu@codeaurora.org>
1 file changed