drivers: replace remaining __FUNCTION__ occurrences

__FUNCTION__ is gcc-specific, use __func__

Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Cc: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/drivers/mfd/sm501.c b/drivers/mfd/sm501.c
index 6e655b4..2fe6473 100644
--- a/drivers/mfd/sm501.c
+++ b/drivers/mfd/sm501.c
@@ -349,11 +349,11 @@
 	mode &= 3;		/* get current power mode */
 
 	if (unit >= ARRAY_SIZE(sm->unit_power)) {
-		dev_err(dev, "%s: bad unit %d\n", __FUNCTION__, unit);
+		dev_err(dev, "%s: bad unit %d\n", __func__, unit);
 		goto already;
 	}
 
-	dev_dbg(sm->dev, "%s: unit %d, cur %d, to %d\n", __FUNCTION__, unit,
+	dev_dbg(sm->dev, "%s: unit %d, cur %d, to %d\n", __func__, unit,
 		sm->unit_power[unit], to);
 
 	if (to == 0 && sm->unit_power[unit] == 0) {