[POWERPC] Replace remaining __FUNCTION__ occurrences

__FUNCTION__ is gcc-specific, use __func__

Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
diff --git a/arch/powerpc/math-emu/fabs.c b/arch/powerpc/math-emu/fabs.c
index 41f0617..549baba 100644
--- a/arch/powerpc/math-emu/fabs.c
+++ b/arch/powerpc/math-emu/fabs.c
@@ -9,7 +9,7 @@
 	frD[1] = frB[1];
 
 #ifdef DEBUG
-	printk("%s: D %p, B %p: ", __FUNCTION__, frD, frB);
+	printk("%s: D %p, B %p: ", __func__, frD, frB);
 	dump_double(frD);
 	printk("\n");
 #endif