Move default HAL libraries to vendor

Libraries under /hardware/libhardware/modules should go to /vendor/.

These are conventionl HALs for default implementations, most of them
are not used.

Camera and thermal are already moved in other CLs.

Bug: 35907904
Test: Compiled and checked install path. Verified on Sailfish with
$ lsof | grep default.

Change-Id: Ibde574001c01cbfea014a20a0fbbb3265e6cdc8a
diff --git a/modules/sensors/Android.mk b/modules/sensors/Android.mk
index 534e6e9..ca277e6 100644
--- a/modules/sensors/Android.mk
+++ b/modules/sensors/Android.mk
@@ -23,6 +23,7 @@
 LOCAL_MODULE := sensors.$(TARGET_DEVICE)
 
 LOCAL_MODULE_RELATIVE_PATH := hw
+LOCAL_PROPRIETARY_MODULE := true
 
 LOCAL_CFLAGS := -DLOG_TAG=\"MultiHal\"