netx: add support for clockevents

This is based on a patch by Luotao Fu <lfu@pengutronix.de>

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Acked-by: Luotao Fu <lfu@pengutronix.de>
Acked-by: Sascha Hauer <s.hauer@pengutronix.de>
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 444ebd3..1bce9ca 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -287,6 +287,7 @@
 config ARCH_NETX
 	bool "Hilscher NetX based"
 	select ARM_VIC
+	select GENERIC_CLOCKEVENTS
 	select GENERIC_TIME
 	help
 	  This enables support for systems based on the Hilscher NetX Soc