meta-android: libhybris:bump SRCREV

Includes the following changes:

  2d86cdc Merge pull request #121 from stskeeps/wayland_flush
  9fa191b Wayland: Flush display connection after commit; solves stalling issue
  ade0477 Merge pull request #120 from groleo/authors
  593de3e AUTHORS update

Signed-off-by: Simon Busch <morphis@gravedo.de>