dt-bindings: spi: nxp-fspi: support i.MX93 and i.MX95

Add i.MX93/95 flexspi compatible strings, which are compatible with
i.MX8MM

Signed-off-by: Peng Fan <peng.fan@nxp.com>
Acked-by: Han Xu <han.xu@nxp.com>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://msgid.link/r/20240122091510.2077498-2-peng.fan@oss.nxp.com


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