NFC: trf7970a: Make gpio labels more readable

Make the labels for the two gpio enable lines
more user friendly by prefixing them with the
driver name.

Signed-off-by: Mark A. Greer <mgreer@animalcreek.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
diff --git a/drivers/nfc/trf7970a.c b/drivers/nfc/trf7970a.c
index 870867d..3e950dd 100644
--- a/drivers/nfc/trf7970a.c
+++ b/drivers/nfc/trf7970a.c
@@ -1297,7 +1297,7 @@
 	}
 
 	ret = devm_gpio_request_one(trf->dev, trf->en_gpio,
-			GPIOF_DIR_OUT | GPIOF_INIT_LOW, "EN");
+			GPIOF_DIR_OUT | GPIOF_INIT_LOW, "trf7970a EN");
 	if (ret) {
 		dev_err(trf->dev, "Can't request EN GPIO: %d\n", ret);
 		return ret;
@@ -1310,7 +1310,7 @@
 	}
 
 	ret = devm_gpio_request_one(trf->dev, trf->en2_gpio,
-			GPIOF_DIR_OUT | GPIOF_INIT_LOW, "EN2");
+			GPIOF_DIR_OUT | GPIOF_INIT_LOW, "trf7970a EN2");
 	if (ret) {
 		dev_err(trf->dev, "Can't request EN2 GPIO: %d\n", ret);
 		return ret;