Add clocks property to require a "mclk" definition for the
maxim,max9867 codec.
Signed-off-by: Richard Leitner <richard.leitner@skidata.com>
Link: https://lore.kernel.org/r/20230302-max9867-v2-2-fd2036d5e825@skidata.comSigned-off-by: Mark Brown <broonie@kernel.org>