ARM: dts: msm8226: increase PWM frequency to avoid flicker

SKUF backlight IC requires PWM input frequency to be 25-30KHz,
previous setting is only 500Hz, there is backlight flicker
issue with this setting

CRs-fixed: 522432

Change-Id: Ic50bec98e607506e997f8db51f26a8a37dfaf8b4
Signed-off-by: rayz <rayzhang@codeaurora.org>
1 file changed