[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/lfs.c b/arch/powerpc/math-emu/lfs.c
index c86dee3..6f18ebe 100644
--- a/arch/powerpc/math-emu/lfs.c
+++ b/arch/powerpc/math-emu/lfs.c
@@ -14,7 +14,7 @@
 	float f;
 
 #ifdef DEBUG
-	printk("%s: D %p, ea %p\n", __FUNCTION__, frD, ea);
+	printk("%s: D %p, ea %p\n", __func__, frD, ea);
 #endif
 
 	if (copy_from_user(&f, ea, sizeof(float)))