media: staging: media: atomisp: remove unnecessary braces

According to the coding style guidelines, if...else blocks with single
instructions do not need enclosing braces. This resolves checkpatch
WARNING / CHECK complaints.

Signed-off-by: Deepak R Varma <drv@mailo.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>