bullhead: update prebuilt kernel [ DO NOT MERGE ] am: 4f0c393aa8  -s ours
am: 0ac68b43f4

Change-Id: I8088fbb1696f4c6d5966adf0a23963a5533967ba
tree: 79e63eb16d3434eb324c392a05039db15e50cc4f
  1. Image.gz-dtb