Move translation tables into separate section

This patch moves the translation tables into their own section. This
saves space that would otherwise have been lost in padding due to page
table alignment constraints. The BL31 and BL32 bases have been
consequently adjusted.

Change-Id: Ibd65ae8a5ce4c4ea9a71a794c95bbff40dc63e65
diff --git a/bl2/bl2.ld.S b/bl2/bl2.ld.S
index c1d5d5c..849297a 100644
--- a/bl2/bl2.ld.S
+++ b/bl2/bl2.ld.S
@@ -59,6 +59,15 @@
         __RO_END__ = .;
     } >RAM
 
+    /*
+     * The .xlat_table section is for full, aligned page tables (4K).
+     * Removing them from .bss avoids forcing 4K alignment on
+     * the .bss section and eliminates the unecessary zero init
+     */
+    xlat_table (NOLOAD) : {
+        *(xlat_table)
+    } >RAM
+
     .data . : {
         __DATA_START__ = .;
         *(.data)