change defaults to ext2 with ipkg package management

target/Config.in

@@ -880,7 +880,7 @@ config ADK_COMPRESSION_TOOL
 choice
 prompt "Root filesystem type"
 	depends on ADK_TARGET_ROOTFS_ARCHIVE
-	default ADK_TARGET_ROOT_XFS
+	default ADK_TARGET_ROOT_EXT2_FS
 
 config ADK_TARGET_ROOT_XFS
 	boolean
@@ -928,7 +928,7 @@ config ADK_PACKAGE_SUFFIX
 
 choice
 prompt "Package backend format"
-	default ADK_TARGET_PACKAGE_TGZ
+	default ADK_TARGET_PACKAGE_IPKG
 
 config ADK_TARGET_PACKAGE_IPKG
 	boolean