[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/lfd.c b/arch/powerpc/math-emu/lfd.c
index 7d38101..6ec90b5 100644
--- a/arch/powerpc/math-emu/lfd.c
+++ b/arch/powerpc/math-emu/lfd.c
@@ -11,7 +11,7 @@
 	if (copy_from_user(frD, ea, sizeof(double)))
 		return -EFAULT;
 #ifdef DEBUG
-	printk("%s: D %p, ea %p: ", __FUNCTION__, frD, ea);
+	printk("%s: D %p, ea %p: ", __func__, frD, ea);
 	dump_double(frD);
 	printk("\n");
 #endif