The TI K3 J721S2 SoCs have two TMS320C71x DSP subsystems, and does not
have any TMS320C66x DSP subsystems. The C71x DSP subsystem in J721S2
SoCs is a similar to the C71x DSP on J721e with some minor core IP updates.

Compatible info is updated for intuitvely matching to the new J721S2
SoCs.
Signed-off-by: Hari Nagalla <hnagalla@ti.com>
Acked-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20211122122726.8532-3-hnagalla@ti.comSigned-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>