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-socfpga/board.c b/arch/arm/mach-socfpga/board.c
index 7c8c05c..340abf9 100644
--- a/arch/arm/mach-socfpga/board.c
+++ b/arch/arm/mach-socfpga/board.c
@@ -8,6 +8,7 @@
 #include <common.h>
 #include <errno.h>
 #include <fdtdec.h>
+#include <init.h>
 #include <asm/arch/reset_manager.h>
 #include <asm/arch/clock_manager.h>
 #include <asm/arch/misc.h>