MIPS: introduce CPU_GENERIC_DUMP_TLB

Allows us not to duplicate more lines in arch/mips/lib/Makefile.

Signed-off-by: Florian Fainelli <florian@openwrt.org>
Patchwork: http://patchwork.linux-mips.org/patch/3329/
Signed-off-by: John Crispin <blogic@openwrt.org>
diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index 8190bdc..b805ccd 100644
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -1880,6 +1880,10 @@
 config CPU_HAS_PREFETCH
 	bool
 
+config CPU_GENERIC_DUMP_TLB
+	bool
+	default y if !(CPU_R3000 || CPU_R6000 || CPU_R8000 || CPU_TX39XX)
+
 choice
 	prompt "MIPS MT options"