pinctrl: cy8c95x0: Use regmap ranges

Instead of implementing a custom register paging mechanism in
the driver use the existing regmap ranges feature.
Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com>
Reviewed-by: Andy Shevchenko <andy@kernel.org>
Link: https://lore.kernel.org/r/20240521152602.1097764-2-patrick.rudolph@9elements.comSigned-off-by: Linus Walleij <linus.walleij@linaro.org>