hikey-kernel: Update kernel 4.1 prebuilt to v4.1.18 (119bf11) am: 3a8d2d1ff0 am: c68b1326ed
am: b00f2a5f83

Change-Id: Idf2b0719153765b0d96f9455196cd560d48dc970
tree: 89b09c913ac681302261b35d3e8b09e4c23fbbe2
  1. hi6220-hikey.dtb
  2. hi6220-hikey.dtb-4.1
  3. Image-dtb
  4. Image-dtb-4.1