drivers: uio_dmem_genirq: Use of_match_ptr() macro

This eliminates having an #ifdef returning NULL for the case
when OF is disabled.

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Acked-by: Damian Hobson-Garcia <dhobsong@igel.co.jp>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/uio/uio_dmem_genirq.c

@@ -336,8 +336,6 @@ static const struct of_device_id uio_of_genirq_match[] = {
 	{ /* empty for now */ },
 };
 MODULE_DEVICE_TABLE(of, uio_of_genirq_match);
-#else
-# define uio_of_genirq_match NULL
 #endif
 
 static struct platform_driver uio_dmem_genirq = {
@@ -347,7 +345,7 @@ static struct platform_driver uio_dmem_genirq = {
 		.name = DRIVER_NAME,
 		.owner = THIS_MODULE,
 		.pm = &uio_dmem_genirq_dev_pm_ops,
-		.of_match_table = uio_of_genirq_match,
+		.of_match_table = of_match_ptr(uio_of_genirq_match),
 	},
 };