media: rc: gpio-ir-tx: drop of_match_ptr for ID table

The driver can match only via the DT table so the table should be always
used and the of_match_ptr does not have any sense (this also allows ACPI
matching via PRP0001, even though it might not be relevant here).  This
also fixes !CONFIG_OF error:

  drivers/media/rc/gpio-ir-tx.c:24:34: error: ‘gpio_ir_tx_of_match’ defined but not used [-Werror=unused-const-variable=]
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Sean Young <sean@mess.org>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>

drivers/media/rc/gpio-ir-tx.c

@@ -199,7 +199,7 @@ static struct platform_driver gpio_ir_tx_driver = {
 	.probe	= gpio_ir_tx_probe,
 	.driver = {
 		.name	= DRIVER_NAME,
-		.of_match_table = of_match_ptr(gpio_ir_tx_of_match),
+		.of_match_table = gpio_ir_tx_of_match,
 	},
 };
 module_platform_driver(gpio_ir_tx_driver);