The TSA (Time Slot Assigner) purpose is to route some
TDM time-slots to other internal serial controllers.

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/20230217145645.1768659-3-herve.codina@bootlin.comSigned-off-by: Mark Brown <broonie@kernel.org>