[PATCH] powerpc: Use -mtraceback=no

gcc 4.7 will be more strict about parsing the -mtraceback option:

 gcc: error: unrecognized argument in option '-mtraceback=none'
 gcc: note: valid arguments to '-mtraceback=' are: full no part

gcc used to do a 2 char compare so both "no" and "none" would
match. Switch to using -mtraceback=no should work everywhere.

Signed-off-by: Anton Blanchard <redacted>
---

Index: linux-powerpc/arch/powerpc/Makefile
===================================================================

--- linux-powerpc.orig/arch/powerpc/Makefile	2011-07-01 09:40:57.902255472 +1000
+++ linux-powerpc/arch/powerpc/Makefile	2011-07-01 09:41:13.512533634 +1000

@@ -67,7 +67,7 @@ LDFLAGS_vmlinux-yy := -Bstatic
 LDFLAGS_vmlinux-$(CONFIG_PPC64)$(CONFIG_RELOCATABLE) := -pie
 LDFLAGS_vmlinux	:= $(LDFLAGS_vmlinux-yy)
 
-CFLAGS-$(CONFIG_PPC64)	:= -mminimal-toc -mtraceback=none  -mcall-aixdesc
+CFLAGS-$(CONFIG_PPC64)	:= -mminimal-toc -mtraceback=no -mcall-aixdesc
 CFLAGS-$(CONFIG_PPC32)	:= -ffixed-r2 -mmultiple
 KBUILD_CPPFLAGS	+= -Iarch/$(ARCH)
 KBUILD_AFLAGS	+= -Iarch/$(ARCH)