The QMC (QUICC Multichannel Controller) emulates up to 64
channels within one serial controller using the same TDM
physical interface routed from the TSA.

It is available in some	PowerQUICC SoC such as the
MPC885 or MPC866.

It is also available on some Quicc Engine SoCs.
This current version support CPM1 SoCs only and some
enhancement are needed to support Quicc Engine SoCs.
Signed-off-by: Herve Codina <herve.codina@bootlin.com>
Acked-by: Li Yang <leoyang.li@nxp.com>
Reviewed-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Link: https://lore.kernel.org/r/20230217145645.1768659-7-herve.codina@bootlin.comSigned-off-by: Mark Brown <broonie@kernel.org>