flo: sensors: Adjust for our usecase

* Rename hals.conf -> _hals.conf so legitimate
  MultiHAL won't attempt to load our HALs.
* Rename multihal -> multihal-asus so soong
  doesn't complain about duplicate package names.
* Remove USE_SENSOR_MULTI_HAL flag requirement so
  we can actually build it.
* Use TARGET_BOARD_PLATFORM variable in package
  name because it's a common tree.

Change-Id: I6287d106bc2783ec7d6c78b9d6bf5fadf8c4244f

sensors/Android.bp

@@ -1,5 +1,5 @@
 cc_library_static {
-    name: "multihal",
+    name: "multihal-asus",
     vendor: true,
     srcs: [
         "multihal.cpp",

sensors/Android.mk

@@ -16,11 +16,9 @@
 
 LOCAL_PATH := $(call my-dir)
 
-ifeq ($(USE_SENSOR_MULTI_HAL),true)
-
 include $(CLEAR_VARS)
 
-LOCAL_MODULE := sensors.$(TARGET_DEVICE)
+LOCAL_MODULE := sensors.$(TARGET_BOARD_PLATFORM)
 
 LOCAL_MODULE_RELATIVE_PATH := hw
 LOCAL_PROPRIETARY_MODULE := true
@@ -41,6 +39,4 @@ LOCAL_STRIP_MODULE := false
 
 include $(BUILD_SHARED_LIBRARY)
 
-endif # USE_SENSOR_MULTI_HAL
-
 include $(call all-makefiles-under, $(LOCAL_PATH))

sensors/multihal.h

@@ -19,10 +19,10 @@
 #include <hardware/sensors.h>
 #include <hardware/hardware.h>
 
-static const char* MULTI_HAL_CONFIG_FILE_PATH = "/vendor/etc/sensors/hals.conf";
+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";
+static const char* DEPRECATED_MULTI_HAL_CONFIG_FILE_PATH = "/system/etc/sensors/_hals.conf";
 
 struct sensors_module_t *get_multi_hal_module_info(void);