Allow frame pointer and fix help text.

Signed-off-by: Andi Kleen <ak@suse.de>

Index: linux/lib/Kconfig.debug
===================================================================
--- linux.orig/lib/Kconfig.debug
+++ linux/lib/Kconfig.debug
@@ -170,11 +170,11 @@ config DEBUG_FS
 
 config FRAME_POINTER
 	bool "Compile the kernel with frame pointers"
-	depends on DEBUG_KERNEL && ((X86 && !X86_64) || CRIS || M68K || M68KNOMMU || FRV || UML)
+	depends on DEBUG_KERNEL && (X86 || CRIS || M68K || M68KNOMMU || FRV || UML)
 	default y if DEBUG_INFO && UML
 	help
 	  If you say Y here the resulting kernel image will be slightly larger
-	  and slower, but it will give very useful debugging information.
-	  If you don't debug the kernel, you can say N, but we may not be able
-	  to solve problems without frame pointers.
+	  and slower, but it might give very useful debugging information
+	  on some architectures or you use external debuggers.
+	  If you don't debug the kernel, you can say N.