arm64: Prepare Actions Semi S900

Add ARCH_ACTIONS.

Signed-off-by: Andreas Färber <afaerber@suse.de>
diff --git a/arch/arm64/Kconfig.platforms b/arch/arm64/Kconfig.platforms
index 4afcffc..dda401a 100644
--- a/arch/arm64/Kconfig.platforms
+++ b/arch/arm64/Kconfig.platforms
@@ -1,5 +1,11 @@
 menu "Platform selection"
 
+config ARCH_ACTIONS
+	bool "Actions Semi Platforms"
+	select OWL_TIMER
+	help
+	  This enables support for the Actions Semiconductor S900 SoC family.
+
 config ARCH_SUNXI
 	bool "Allwinner sunxi 64-bit SoC Family"
 	select ARCH_HAS_RESET_CONTROLLER