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/drivers/ram/rockchip/sdram_rk3328.c b/drivers/ram/rockchip/sdram_rk3328.c
index 8329f4a..36e0d2e 100644
--- a/drivers/ram/rockchip/sdram_rk3328.c
+++ b/drivers/ram/rockchip/sdram_rk3328.c
@@ -7,6 +7,7 @@
 #include <debug_uart.h>
 #include <dm.h>
 #include <dt-structs.h>
+#include <init.h>
 #include <ram.h>
 #include <regmap.h>
 #include <syscon.h>