[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/stfiwx.c b/arch/powerpc/math-emu/stfiwx.c
index 95caaee..f15a35f 100644
--- a/arch/powerpc/math-emu/stfiwx.c
+++ b/arch/powerpc/math-emu/stfiwx.c
@@ -6,7 +6,7 @@
 stfiwx(u32 *frS, void *ea)
 {
 #ifdef DEBUG
-	printk("%s: %p %p\n", __FUNCTION__, frS, ea);
+	printk("%s: %p %p\n", __func__, frS, ea);
 #endif
 
 	if (copy_to_user(ea, &frS[1], sizeof(frS[1])))