common: Drop init.h from common header

Move this uncommon header out of the common header.

Signed-off-by: Simon Glass <sjg@chromium.org>

board/google/gru/gru.c

@@ -4,6 +4,7 @@
  */
 
 #include <common.h>
+#include <init.h>
 
 #ifdef CONFIG_SPL_BUILD
 /* provided to defeat compiler optimisation in board_init_f() */

board/google/veyron/veyron.c

@@ -6,6 +6,7 @@
 #include <clk.h>
 #include <common.h>
 #include <dm.h>
+#include <init.h>
 #include <asm/arch-rockchip/clock.h>
 #include <dt-bindings/clock/rk3288-cru.h>
 #include <linux/err.h>