boards: arc: hsdk: Enable CY8C95XX if GPIO
boards: arc: hsdk: Enable CY8C95XX if GPIO

The board has an I2C GPIO expander on it.  A number of samples utilize
LEDs on GPIOs for testing purpose so it makes sense to enable the GPIO
expander (CONFIG_GPIO_CY8C95XX) driver when CONFIG_GPIO has been
enabled.  We have to also enable I2C since the expander is connected
over an I2C interface.

Signed-off-by: Kumar Gala <a5e5248af4cd4f0ed8c515f61d40a6e2db46a66e@linaro.org>

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