[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/mtfsb1.c b/arch/powerpc/math-emu/mtfsb1.c
index 3d9e7ed..2e94870 100644
--- a/arch/powerpc/math-emu/mtfsb1.c
+++ b/arch/powerpc/math-emu/mtfsb1.c
@@ -11,7 +11,7 @@
 		__FPU_FPSCR |= (1 << (31 - crbD));
 
 #ifdef DEBUG
-	printk("%s: %d %08lx\n", __FUNCTION__, crbD, __FPU_FPSCR);
+	printk("%s: %d %08lx\n", __func__, crbD, __FPU_FPSCR);
 #endif
 
 	return 0;