drivers: gpio: gpio_cy8c95xx.c: move driver to use i2c_dt_spec
drivers: gpio: gpio_cy8c95xx.c: move driver to use i2c_dt_spec

Simplify driver by using i2c_dt_spec for bus access.

Signed-off-by: Benjamin Björnsson <8044ef148b03b50e606a03e6e88e2c21cb9a92a8@gmail.com>

zephyrproject-rtos/zephyr,finikorg/zephyr,galak/zephyr,finikorg/zephyr,finikorg/zephyr,zephyrproject-rtos/zephyr,galak/zephyr,zephyrproject-rtos/zephyr,finikorg/zephyr,zephyrproject-rtos/zephyr,finikorg/zephyr,galak/zephyr,galak/zephyr,galak/zephyr,zephyrproject-rtos/zephyr