ARM: keystone: Enable clock drivers

Enable common clock drivers on Keystone 2 based SOCs.

Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
diff --git a/arch/arm/mach-keystone/Kconfig b/arch/arm/mach-keystone/Kconfig
index 366d1a3..d7c425d 100644
--- a/arch/arm/mach-keystone/Kconfig
+++ b/arch/arm/mach-keystone/Kconfig
@@ -9,6 +9,7 @@
 	select GENERIC_CLOCKEVENTS
 	select ARCH_WANT_OPTIONAL_GPIOLIB
 	select ARM_ERRATA_798181 if SMP
+	select COMMON_CLK_KEYSTONE
 	help
 	  Support for boards based on the Texas Instruments Keystone family of
 	  SoCs.