pinctrl: cy8c95x0: Fix off-by-one in the regmap range settings

The range_max is inclusive, so we need to use the number of
the last accessible register address.

Fixes: 8670de9f ("pinctrl: cy8c95x0: Use regmap ranges")
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/20250203131506.3318201-2-andriy.shevchenko@linux.intel.com


Signed-off-by: Linus Walleij <linus.walleij@linaro.org>