[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-pxa/dma.c b/arch/arm/mach-pxa/dma.c
index 93c4f31..3215316 100644
--- a/arch/arm/mach-pxa/dma.c
+++ b/arch/arm/mach-pxa/dma.c
@@ -81,7 +81,7 @@
 	if (!dma_channels[dma_ch].name) {
 		printk (KERN_CRIT
 			"%s: trying to free channel %d which is already freed\n",
-			__FUNCTION__, dma_ch);
+			__func__, dma_ch);
 		return;
 	}