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

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

Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/env/remote.c b/env/remote.c
index 166bebf..0cc383c 100644
--- a/env/remote.c
+++ b/env/remote.c
@@ -5,10 +5,10 @@
 
 /* #define DEBUG */
 
-#include <common.h>
 #include <command.h>
 #include <env_internal.h>
 #include <asm/global_data.h>
+#include <linux/errno.h>
 #include <linux/stddef.h>
 #include <u-boot/crc.h>