add build config for newly added platforms

adding build config for following platforms
 - Marvell: t9130
 - Mediatek: mt8192
 - Qualcomm: sc7180

Change-Id: Iedd0f08c155e46b9193115e71c72854587c0db89
Signed-off-by: Manish Pandey <manish.pandey2@arm.com>
diff --git a/group/tf-l1-build-plat/sc7180-default:nil b/group/tf-l1-build-plat/sc7180-default:nil
new file mode 100644
index 0000000..d52947d
--- /dev/null
+++ b/group/tf-l1-build-plat/sc7180-default:nil
@@ -0,0 +1,6 @@
+#
+# Copyright (c) 2020, Arm Limited. All rights reserved.
+#
+# SPDX-License-Identifier: BSD-3-Clause
+#
+