common: Move some board functions out of common.h

A number of board function belong in init.h with the others. Move them.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Tom Rini <trini@konsulko.com>
diff --git a/board/xilinx/zynqmp/zynqmp.c b/board/xilinx/zynqmp/zynqmp.c
index 836c285..aac2eb7 100644
--- a/board/xilinx/zynqmp/zynqmp.c
+++ b/board/xilinx/zynqmp/zynqmp.c
@@ -7,6 +7,7 @@
 #include <common.h>
 #include <cpu_func.h>
 #include <env.h>
+#include <init.h>
 #include <sata.h>
 #include <ahci.h>
 #include <scsi.h>