i.MX clock changes for 6.18

- Rework the i.MX95 BLK CTL driver to add the platform data to the
  state container.
- Retain the state of the i.MS95 BLK CTL registers through both
runtime and system suspend.

clk: imx95-blk-ctl: Save/restore registers when RPM routines are called

When runtime PM is used for clock providers that are part of a power
domain, the power domain supply is cut off during runtime suspend. This
causes all BLK CTL registers belonging to that power domain to reset. To
prevent this, save the state of the registers before entering suspend
and restore them on resume. Additionally, disable the APB clock during
suspend to minimize power consumption.

Signed-off-by: Laurentiu Palcu <laurentiu.palcu@oss.nxp.com>
Reviewed-by: Frank Li <Frank.Li@nxp.com>
Link: https://lore.kernel.org/r/20250804131450.3918846-3-laurentiu.palcu@oss.nxp.com
Signed-off-by: Abel Vesa <abel.vesa@linaro.org>