Add a Makefile

Note that sdremote does not use any LO native code, this Makefile does
not need and has none of the related complexity, like those in
../experimental/*.

Change-Id: Iaa9fb7f0b1a96af4283dc19a2ad125f37ba85411

android/sdremote/Makefile

+# -*- Mode: makefile-gmake; tab-width: 4; indent-tabs-mode: t -*-
+#
+# This file is part of the LibreOffice project.
+#
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+include ../../config_host.mk
+
+all:
+	echo sdk.dir=$(ANDROID_SDK_HOME) >local.properties
+	$(ANT) debug
+
+# vim: set noet sw=4 ts=4: