[MIPS] Fix wreckage after removal of tickadj; convert to GENERIC_TIME.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index 9fe9050..bfab055 100644
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -803,6 +803,10 @@
 	bool
 	default y
 
+config GENERIC_TIME
+	bool
+	default y
+
 config SCHED_NO_NO_OMIT_FRAME_POINTER
 	bool
 	default y