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>

cmd/fpgad.c

@@ -8,10 +8,10 @@
  * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
  */
 
-#include <common.h>
 #include <command.h>
 #include <console.h>
 #include <display_options.h>
+#include <vsprintf.h>
 
 #include <gdsys_fpga.h>