spi: replace remaining __FUNCTION__ occurrences

__FUNCTION__ is gcc-specific, use __func__

Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Acked-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/drivers/spi/spi_s3c24xx.c b/drivers/spi/spi_s3c24xx.c
index b7476b8..34bfb7d 100644
--- a/drivers/spi/spi_s3c24xx.c
+++ b/drivers/spi/spi_s3c24xx.c
@@ -169,7 +169,7 @@
 	}
 
 	dev_dbg(&spi->dev, "%s: mode %d, %u bpw, %d hz\n",
-		__FUNCTION__, spi->mode, spi->bits_per_word,
+		__func__, spi->mode, spi->bits_per_word,
 		spi->max_speed_hz);
 
 	return 0;