V4L/DVB (7513): media/dvb/dvb-usb replace remaining __FUNCTION__ occurrences

__FUNCTION__ is gcc-specific, use __func__

Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
diff --git a/drivers/media/dvb/dvb-usb/cxusb.c b/drivers/media/dvb/dvb-usb/cxusb.c
index b75b2b7..4e5118d 100644
--- a/drivers/media/dvb/dvb-usb/cxusb.c
+++ b/drivers/media/dvb/dvb-usb/cxusb.c
@@ -492,14 +492,14 @@
 
 	switch (command) {
 	case XC2028_TUNER_RESET:
-		deb_info("%s: XC2028_TUNER_RESET %d\n", __FUNCTION__, arg);
+		deb_info("%s: XC2028_TUNER_RESET %d\n", __func__, arg);
 		cxusb_bluebird_gpio_pulse(d, 0x01, 1);
 		break;
 	case XC2028_RESET_CLK:
-		deb_info("%s: XC2028_RESET_CLK %d\n", __FUNCTION__, arg);
+		deb_info("%s: XC2028_RESET_CLK %d\n", __func__, arg);
 		break;
 	default:
-		deb_info("%s: unknown command %d, arg %d\n", __FUNCTION__,
+		deb_info("%s: unknown command %d, arg %d\n", __func__,
 			 command, arg);
 		return -EINVAL;
 	}