common: Move command functions out of common.h

Move these functions into the command.h header file which is a better fit.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Tom Rini <trini@konsulko.com>
diff --git a/board/engicam/common/board.c b/board/engicam/common/board.c
index 0c47afe..31ff297 100644
--- a/board/engicam/common/board.c
+++ b/board/engicam/common/board.c
@@ -6,6 +6,7 @@
  */
 
 #include <common.h>
+#include <command.h>
 #include <env.h>
 #include <mmc.h>
 #include <asm/arch/sys_proto.h>
diff --git a/board/gdsys/a38x/keyprogram.c b/board/gdsys/a38x/keyprogram.c
index 0008979..853981a 100644
--- a/board/gdsys/a38x/keyprogram.c
+++ b/board/gdsys/a38x/keyprogram.c
@@ -5,6 +5,7 @@
  */
 
 #include <common.h>
+#include <command.h>
 #include <env.h>
 #include <tpm-v1.h>
 #include <malloc.h>
diff --git a/board/gdsys/p1022/controlcenterd-id.c b/board/gdsys/p1022/controlcenterd-id.c
index d6798bd..04d3809 100644
--- a/board/gdsys/p1022/controlcenterd-id.c
+++ b/board/gdsys/p1022/controlcenterd-id.c
@@ -11,6 +11,7 @@
 #endif
 
 #include <common.h>
+#include <command.h>
 #include <dm.h>
 #include <env.h>
 #include <malloc.h>
diff --git a/board/grinn/liteboard/board.c b/board/grinn/liteboard/board.c
index 1558ea4..151041a 100644
--- a/board/grinn/liteboard/board.c
+++ b/board/grinn/liteboard/board.c
@@ -4,6 +4,7 @@
  * Copyright (C) 2016 Grinn
  */
 
+#include <command.h>
 #include <asm/arch/clock.h>
 #include <asm/arch/iomux.h>
 #include <asm/arch/imx-regs.h>
diff --git a/board/inversepath/usbarmory/usbarmory.c b/board/inversepath/usbarmory/usbarmory.c
index de4ad83..1951018 100644
--- a/board/inversepath/usbarmory/usbarmory.c
+++ b/board/inversepath/usbarmory/usbarmory.c
@@ -8,6 +8,7 @@
  */
 
 #include <common.h>
+#include <command.h>
 #include <asm/io.h>
 #include <asm/arch/imx-regs.h>
 #include <asm/arch/sys_proto.h>
diff --git a/board/samsung/common/misc.c b/board/samsung/common/misc.c
index 3ef1e79..9117669 100644
--- a/board/samsung/common/misc.c
+++ b/board/samsung/common/misc.c
@@ -5,6 +5,7 @@
  */
 
 #include <common.h>
+#include <command.h>
 #include <env.h>
 #include <lcd.h>
 #include <libtizen.h>