potter: use our own multihal to workaround version check in HIDL HAL

Change-Id: I356c569304b7e6c0351c456019c4b43048edb120

sensors/multihal.h

@@ -0,0 +1,29 @@
+/*
+ * Copyright (C) 2016 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.
+ */
+#ifndef HARDWARE_LIBHARDWARE_MODULES_SENSORS_MULTIHAL_H_
+#define HARDWARE_LIBHARDWARE_MODULES_SENSORS_MULTIHAL_H_
+
+#include <hardware/sensors.h>
+#include <hardware/hardware.h>
+
+static const char* MULTI_HAL_CONFIG_FILE_PATH = "/vendor/etc/sensors/_hals.conf";
+
+// Depracated because system partition HAL config file does not satisfy treble requirements.
+static const char* DEPRECATED_MULTI_HAL_CONFIG_FILE_PATH = "/system/etc/sensors/_hals.conf";
+
+struct sensors_module_t *get_multi_hal_module_info(void);
+
+#endif // HARDWARE_LIBHARDWARE_MODULES_SENSORS_MULTIHAL_H_