[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>
diff --git a/arch/arm/mach-pnx4008/dma.c b/arch/arm/mach-pnx4008/dma.c
index f7009d8..fe152e8 100644
--- a/arch/arm/mach-pnx4008/dma.c
+++ b/arch/arm/mach-pnx4008/dma.c
@@ -192,7 +192,7 @@
 	if (!dma_channels[ch].name) {
 		printk(KERN_CRIT
 		       "%s: trying to free channel %d which is already freed\n",
-		       __FUNCTION__, ch);
+		       __func__, ch);
 		return;
 	}