Add nvidia product

Intended to be conditionally included in tegra device trees

This will be used to indicate which tegra specific modifications
are available. Firstly is the baseline framework modifications
for nvcpl and profiles

Change-Id: Ibae95de3ee47a4a1cefbcd4035ef48dbc246d266

product/nvidia.mk

+# Copyright (C) 2019 The LineageOS Project
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# Baseline Nvidia framework enhancements
+# Includes support for:
+# 1) NvCPL / Application Profiles
+NV_ANDROID_FRAMEWORK_ENHANCEMENTS := true