media: cedrus: Fix undefined shift with a SHIFT_AND_MASK_BITS macro

media: cedrus: Fix undefined shift with a SHIFT_AND_MASK_BITS macro

[ Upstream commit 06eff2150d4db991ca236f3d05a9dc0101475aea ]

We need to shift and mask values at different occasions to fill up
cedrus registers. This was done using macros that don't explicitly
treat arguments as unsigned, leading to possibly undefined behavior.

Introduce the SHIFT_AND_MASK_BITS macro and use it where possible.
In cases where it doesn't apply as-is, explicitly cast to unsigned
instead.

This macro should be moved to include/linux/bits.h eventually.

Signed-off-by: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>