Update Nexus 5 to M4B30Z

BUG=skia:

Change-Id: I6544be934f3ea84c67e0b0349e2467dd78292647
Reviewed-on: https://skia-review.googlesource.com/6473
Reviewed-by: Ravi Mistry <rmistry@google.com>
Commit-Queue: Kevin Lubick <kjlubick@google.com>
tree: 2399b8333bb06dc4c5450126f7dc9e041adcec31
  1. recipe_modules/
  2. recipes.py
  3. recipes/