xtensa: ccount clocksource

Switch to GENERIC_TIME by using the ccount register as a clock source.

Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Signed-off-by: Chris Zankel <chris@zankel.net>
diff --git a/arch/xtensa/Kconfig b/arch/xtensa/Kconfig
index 7bbc6c19..fa6dc4d 100644
--- a/arch/xtensa/Kconfig
+++ b/arch/xtensa/Kconfig
@@ -48,6 +48,9 @@
 	int
 	default 100
 
+config GENERIC_TIME
+	def_bool y
+
 source "init/Kconfig"
 source "kernel/Kconfig.freezer"