Allow ui.xml to include additional xml files to read

Use common portrait and landscape xml files based on resolution
defined by the device.

Change-Id: Iec528f9d846d49857ff98de1ac201e25dbb60339
diff --git a/gui/resources.cpp b/gui/resources.cpp
index 7a50a89..8d430b1 100644
--- a/gui/resources.cpp
+++ b/gui/resources.cpp
@@ -183,6 +183,11 @@
 
 ResourceManager::ResourceManager(xml_node<>* resList, ZipArchive* pZip)
 {
+	LoadResources(resList, pZip);
+}
+
+void ResourceManager::LoadResources(xml_node<>* resList, ZipArchive* pZip)
+{
 	xml_node<>* child;
 
 	if (!resList)