regulator: rpi-panel-attiny: don't double-check GPIO range

GPIO core already checks GPIO ranges, there's no need to check it again
in the set() callback.

Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Link: https://patch.msgid.link/20250408-gpiochip-set-rv-regulator-v1-1-a18b6154b31a@linaro.org
Signed-off-by: Mark Brown <broonie@kernel.org>

Author: Bartosz Golaszewski

drivers/regulator/rpi-panel-attiny-regulator.c

@@ -216,9 +216,6 @@ static void attiny_gpio_set(struct gpio_chip *gc, unsigned int off, int val)
 	struct attiny_lcd *state = gpiochip_get_data(gc);
 	u8 last_val;
 
-	if (off >= NUM_GPIO)
-		return;
-
 	mutex_lock(&state->lock);
 
 	last_val = attiny_get_port_state(state, mappings[off].reg);