Simplify translation tables headers dependencies

The files affected by this patch don't really depend on `xlat_tables.h`.
By changing the included file it becomes easier to switch between the
two versions of the translation tables library.

Change-Id: Idae9171c490e0865cb55883b19eaf942457c4ccc
Signed-off-by: Antonio Nino Diaz <antonio.ninodiaz@arm.com>
diff --git a/common/bl_common.c b/common/bl_common.c
index 1d66530..58d8e86 100644
--- a/common/bl_common.c
+++ b/common/bl_common.c
@@ -39,7 +39,7 @@
 #include <platform.h>
 #include <string.h>
 #include <utils.h>
-#include <xlat_tables.h>
+#include <xlat_tables_defs.h>
 
 uintptr_t page_align(uintptr_t value, unsigned dir)
 {