board: ti: Remove <common.h> and add needed includes

Remove <common.h> from this board vendor directory and when needed
add missing include files directly.

Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/board/ti/am57xx/board.c b/board/ti/am57xx/board.c
index b004a89..4866888 100644
--- a/board/ti/am57xx/board.c
+++ b/board/ti/am57xx/board.c
@@ -7,7 +7,7 @@
  * Based on board/ti/dra7xx/evm.c
  */
 
-#include <common.h>
+#include <config.h>
 #include <env.h>
 #include <fastboot.h>
 #include <fdt_support.h>