Increase build and test coverage by enabling modular support for the
Maxim MAX96712 Quad GMSL2 Deserializer, as used on the Renesas Falcon
board.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/7b5ea7eaabc1da79fd974f9d9845a5a527f2fb14.1649947458.git.geert+renesas@glider.be