Move slider into gs101 and <device>

from: 026342771c6642980cb4653b1ec4d857a5d8be54

Bug: 167996145
Change-Id: I08376762c559b3a7fd2cd2d743d090269ed52c94
diff --git a/raven/BoardConfig.mk b/raven/BoardConfig.mk
new file mode 100644
index 0000000..cdd3e89
--- /dev/null
+++ b/raven/BoardConfig.mk
@@ -0,0 +1,22 @@
+#
+# Copyright (C) 2020 The Android Open-Source 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.
+#
+TARGET_BOARD_INFO_FILE := device/google/raviole/board-info.txt
+TARGET_BOOTLOADER_BOARD_NAME := raven
+TARGET_SCREEN_DENSITY := 560
+USES_DEVICE_GOOGLE_RAVIOLE := true
+
+include device/google/gs101/BoardConfig-common.mk
+-include vendor/google_devices/gs101/prebuilts/BoardConfigVendor.mk