Added trustzone package.

Change-Id: Ic4a123038cb2ba5cd16ad2bd3c3dd76de8aadddb
diff --git a/packages.mk b/packages.mk
index f44599f..6c04e41 100644
--- a/packages.mk
+++ b/packages.mk
@@ -14,3 +14,4 @@
 
 $(eval $(call make-pbuilder-bsp-package-target,u-boot-mkimage,bootloader/mtk-tools/u-boot-mkimage))
 $(eval $(call make-pbuilder-bsp-package-target,lk-bootloader,bootloader))
+$(eval $(call make-pbuilder-bsp-package-target,trustzone,trustzone))