grouper: update prebuilt kernel

4687fdd ext4: add missing save_error_info() to ext4_error()
1cec7a2 Display: kernel default brightness change to 40
839f109 video: tegra: host: Remove error case panics
7e9faba video: tegra: host: Restrict register access
c42c9fa video: tegra: host: Restrict register access
1903bf0 ALS: extend require wait time to 200ms to get the stable lux value      of the first query from sensor service.
229accb ALS : avoid light sensor first event return -1
3db8fcf Display: pwm clock setting tuning

Change-Id: I01fdd1a000afa29a58289ad35520390b2213e46f
1 file changed