ASoC: codecs: tfa989x: Add support for tfa9897 RCV bit

TFA9897 has an internal 'rcv' switch so that it can manage both
loudspeaker and earpiece modes with the same physical speaker.

Signed-off-by: Vincent Knecht <vincent.knecht@mailoo.org>
Link: https://lore.kernel.org/r/20211024085840.1536438-3-vincent.knecht@mailoo.org


Signed-off-by: Mark Brown <broonie@kernel.org>