video: replace strict_strtoul() with kstrtoul()

The usage of strict_strtoul() is not preferred, because
strict_strtoul() is obsolete. Thus, kstrtoul() should be
used.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>

diff --cc drivers/video/fsl-diu-fb.c
Simple merge

diff --cc drivers/video/omap2/displays/panel-taal.c
Simple merge

diff --cc drivers/video/wm8505fb.c
Simple merge