xlat v2: Cleanup get/change mem attr helpers

Changed the names for consistency with the rest of the library. Introduced
new helpers that manipulate the active translation tables context.

Change-Id: Icaca56b67fcf6a96e88aa3c7e47411162e8e6856
Signed-off-by: Antonio Nino Diaz <antonio.ninodiaz@arm.com>
diff --git a/lib/xlat_tables_v2/xlat_tables_context.c b/lib/xlat_tables_v2/xlat_tables_context.c
index d7b2ebf..143f08a 100644
--- a/lib/xlat_tables_v2/xlat_tables_context.c
+++ b/lib/xlat_tables_v2/xlat_tables_context.c
@@ -90,6 +90,16 @@
 	init_xlat_tables_ctx(&tf_xlat_ctx);
 }
 
+int xlat_get_mem_attributes(uintptr_t base_va, uint32_t *attr)
+{
+	return xlat_get_mem_attributes_ctx(&tf_xlat_ctx, base_va, attr);
+}
+
+int xlat_change_mem_attributes(uintptr_t base_va, size_t size, uint32_t attr)
+{
+	return xlat_change_mem_attributes_ctx(&tf_xlat_ctx, base_va, size, attr);
+}
+
 /*
  * If dynamic allocation of new regions is disabled then by the time we call the
  * function enabling the MMU, we'll have registered all the memory regions to