common: Drop init.h from common header

Move this uncommon header out of the common header.

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/arch/arm/mach-rockchip/rk3399/rk3399.c b/arch/arm/mach-rockchip/rk3399/rk3399.c
index 3a51194..aaa7246 100644
--- a/arch/arm/mach-rockchip/rk3399/rk3399.c
+++ b/arch/arm/mach-rockchip/rk3399/rk3399.c
@@ -5,6 +5,7 @@
 
 #include <common.h>
 #include <fdt_support.h>
+#include <init.h>
 #include <spl.h>
 #include <spl_gpio.h>
 #include <syscon.h>