V4L/DVB (7514): media/dvb/frontends replace remaining __FUNCTION__ occurrences

__FUNCTION__ is gcc-specific, use __func__

Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Acked-by: Oliver Endriss <o.endriss@gmx.de>
Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
diff --git a/drivers/media/dvb/frontends/l64781.c b/drivers/media/dvb/frontends/l64781.c
index 443d904..e1e70e9 100644
--- a/drivers/media/dvb/frontends/l64781.c
+++ b/drivers/media/dvb/frontends/l64781.c
@@ -57,7 +57,7 @@
 
 	if ((ret = i2c_transfer(state->i2c, &msg, 1)) != 1)
 		dprintk ("%s: write_reg error (reg == %02x) = %02x!\n",
-			 __FUNCTION__, reg, ret);
+			 __func__, reg, ret);
 
 	return (ret != 1) ? -1 : 0;
 }