mmc: sdhci-cadence: Use hardware version field for Cadence SDHCI controller

mmc: sdhci-cadence: Use hardware version field for Cadence SDHCI controller

Replace device tree compatible string checks with hardware version field
detection to determine SDHCI controller capabilities. This approach is
more robust and aligns with standard SDHCI specification practices.
Controllers with SDHCI version 4.2 and above will automatically use the
enhanced PHY adjustment, and tuning v6-specific procedures.

Signed-off-by: Tanmay Kathpalia <tanmay.kathpalia@altera.com>
Reviewed-by: Balsundar Ponnusamy <balsundar.ponnusamy@altera.com>
Acked-by: Peng Fan <peng.fan@nxp.com>
Signed-off-by: Peng Fan <peng.fan@nxp.com>