hammerhead: update prebuilt kernel am: 984be8d24b
am: d2f80b57ce

* commit 'd2f80b57ce59a17513d86f8f7d0bd816d723fe9d':
  hammerhead: update prebuilt kernel
tree: f0cd38b301d484d703b61094540fb09640bc2c43
  1. zImage-dtb