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

Remove <common.h> from here and when needed add missing include files
directly.

Signed-off-by: Tom Rini <trini@konsulko.com>

api/api.c

@@ -7,11 +7,13 @@
 
 #include <config.h>
 #include <command.h>
-#include <common.h>
 #include <env.h>
 #include <malloc.h>
+#include <time.h>
 #include <env_internal.h>
+#include <vsprintf.h>
 #include <linux/delay.h>
+#include <linux/errno.h>
 #include <linux/types.h>
 #include <api_public.h>
 #include <u-boot/crc.h>