xlat v2: Split code into separate files

Instead of having one big file with all the code, it's better to have
a few smaller files that are more manageable:

- xlat_tables_core.c: Code related to the core functionality of the
  library (map and unmap regions, initialize xlat context).
- xlat_tables_context.c: Instantiation of the active image context
  as well as APIs to manipulate it.
- xlat_tables_utils.c: Helper code that isn't part of the core
  functionality (change attributes, debug print messages).

Change-Id: I3ea956fc1afd7473c0bb5e7c6aab3b2e5d88c711
Signed-off-by: Antonio Nino Diaz <antonio.ninodiaz@arm.com>
diff --git a/lib/xlat_tables_v2/aarch64/xlat_tables_arch.c b/lib/xlat_tables_v2/aarch64/xlat_tables_arch.c
index 71b9c8f..4bbbe54 100644
--- a/lib/xlat_tables_v2/aarch64/xlat_tables_arch.c
+++ b/lib/xlat_tables_v2/aarch64/xlat_tables_arch.c
@@ -7,11 +7,8 @@
 #include <arch.h>
 #include <arch_helpers.h>
 #include <assert.h>
-#include <bl_common.h>
 #include <cassert.h>
-#include <common_def.h>
 #include <sys/types.h>
-#include <utils.h>
 #include <utils_def.h>
 #include <xlat_tables_v2.h>
 #include "../xlat_tables_private.h"
@@ -128,7 +125,7 @@
 #endif
 }
 
-void xlat_arch_tlbi_va_regime(uintptr_t va, xlat_regime_t xlat_regime)
+void xlat_arch_tlbi_va_regime(uintptr_t va, int xlat_regime)
 {
 	/*
 	 * Ensure the translation table write has drained into memory before