[MIPS] Don't force frame pointers for lockdep on MIPS

Stacktrace support on MIPS doesn't use frame pointers.  Since this option
considerably increases the size of the kernel code, force lockdep to not
use it.

Signed-off-by: Franck Bui-Huu <fbuihuu@gmail.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
index 3f3e740..79afd00 100644
--- a/lib/Kconfig.debug
+++ b/lib/Kconfig.debug
@@ -261,7 +261,7 @@
 	bool
 	depends on DEBUG_KERNEL && TRACE_IRQFLAGS_SUPPORT && STACKTRACE_SUPPORT && LOCKDEP_SUPPORT
 	select STACKTRACE
-	select FRAME_POINTER if !X86
+	select FRAME_POINTER if !X86 && !MIPS
 	select KALLSYMS
 	select KALLSYMS_ALL