hikey-kernel: Add hikey960 android-5.4 kernel and modules am: 116a79898b am: 12b794bfdc am: 2ee513caf0

Original change: https://android-review.googlesource.com/c/device/linaro/hikey-kernel/+/1324301

Change-Id: I58d4178dbe792cb429792fcc61099a9b65b0c98a
tree: 193f73823093cf964ab60462202b56e226e0357f
  1. hikey/
  2. hikey960/
  3. update-prebuilts.sh