cmd: Remove <common.h> and add needed includes

Remove <common.h> from all "cmd/" files and when needed add
missing include files directly.

Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/cmd/test.c b/cmd/test.c
index fa7c48f..b4c3eab 100644
--- a/cmd/test.c
+++ b/cmd/test.c
@@ -4,10 +4,10 @@
  * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
  */
 
-#include <common.h>
 #include <command.h>
 #include <fs.h>
 #include <log.h>
+#include <vsprintf.h>
 
 #define OP_INVALID	0
 #define OP_NOT		1