pathmap: Default to AOSP RIL

Squash of the following changes:

  Author: Simon Shields <simon@lineageos.org>
  Date:   Fri Mar 2 15:18:28 2018 +1100

    config: use AOSP RIL for non-lineage builds

    Change-Id: I1ffc45426c16920d138bfd6b3940f16899b70e65

  Author: Ethan Chen <intervigil@gmail.com>
  Date:   Sat Mar 3 18:42:50 2018 -0800

    pathmap: Move RIL path mapping to core/config.mk

    * hardware/ril is a required project for any build. Since
      pathmap logic is available to any project building out of
      a Lineage checkout, RIL path mapping should be made
      available to all build types.

    Change-Id: I45fd8771d0226caaf5ac05899fbbdb73a9cc8c01

Change-Id: I038613bc0c6d1a5426feabf74c0cc4513fe5fbc1