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/lzmadec.c b/cmd/lzmadec.c
index 81924da..c40b969 100644
--- a/cmd/lzmadec.c
+++ b/cmd/lzmadec.c
@@ -9,10 +9,10 @@
  * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
  */
 
-#include <common.h>
 #include <command.h>
 #include <env.h>
 #include <mapmem.h>
+#include <vsprintf.h>
 #include <asm/io.h>
 
 #include <lzma/LzmaTools.h>