wpa_supplicant(hidl): Create a version subfolder

This is needed to support multiple HIDL interface version
implementations simultaneously in the tree.

The makefile variable |HIDL_INTERFACE_VERSION| will be used to chose
between the 2:
On oc-dev branch, HIDL_INTERFACE_VERSION := 1.0
On master branch, HIDL_INTERFACE_VERSION := 1.1

Bug: 38349675
Test: Compiles
Change-Id: I73c346f0d5da140295f9c880c35b79c14da206f0
22 files changed