media: uvcvideo: Refactor uvc_ctrl_mappings_uvcXX

media: uvcvideo: Refactor uvc_ctrl_mappings_uvcXX

[ Upstream commit 96a160b068e09b4ed5a32e2179e5219fc3545eca ]

Convert the array of structs into an array of pointers, that way the
mappings can be reused.

Signed-off-by: Ricardo Ribalda <ribalda@chromium.org>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Stable-dep-of: 3aa8628eb78a ("media: uvcvideo: Refactor power_line_frequency_controls_limited")
Signed-off-by: Sasha Levin <sashal@kernel.org>