[ARM] replace remaining __FUNCTION__ occurrences

__FUNCTION__ is gcc-specific, use __func__

Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

arch/arm/mach-pxa/em-x270.c

@@ -264,7 +264,7 @@ static int em_x270_mci_init(struct device *dev,
 			  "MMC card detect", data);
 	if (err) {
 		printk(KERN_ERR "%s: can't request MMC card detect IRQ: %d\n",
-		       __FUNCTION__, err);
+		       __func__, err);
 		return err;
 	}