gpio: wcd934x: Remove duplicate assignment of of_gpio_n_cells

gpio: wcd934x: Remove duplicate assignment of of_gpio_n_cells

[ Upstream commit a060dc6620c13435b78e92cd2ebdbb6d11af237a ]

The of_gpio_n_cells default is 2 when ->of_xlate() callback is
not defined. No need to assign it explicitly in the driver.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Stable-dep-of: b5f8aa8d4bde ("gpio: wcd934x: mark the GPIO controller as sleeping")
Signed-off-by: Sasha Levin <sashal@kernel.org>