Fixes these warnings:

drivers/media/platform/s5p-jpeg/jpeg-core.h:136: warning: Function parameter or member 'irq_ret' not described in 's5p_jpeg'
drivers/media/platform/s5p-jpeg/jpeg-core.h:136: warning: Function parameter or member 'irq_status' not described in 's5p_jpeg'
drivers/media/platform/s5p-jpeg/jpeg-core.h:168: warning: Function parameter or member 'memplanes' not described in 's5p_jpeg_fmt'
drivers/media/platform/s5p-jpeg/jpeg-core.h:168: warning: Function parameter or member 'subsampling' not described in 's5p_jpeg_fmt'
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>