[LSC] Add LOCAL_LICENSE_KINDS to external/ethtool

Added SPDX-license-identifier-GPL SPDX-license-identifier-GPL-2.0
    SPDX-license-identifier-LGPL
to:
  Android.bp

Bug: 68860345
Bug: 151177513
Bug: 151953481

Test: m all

Exempt-From-Owner-Approval: janitorial work
Change-Id: I9c28557b458d618b8290c543da24749f205050c7
1 file changed