hikey: Use Image-dtb instead of Image am: 7329c0c06d am: 28d3e12b0b
am: ee006b315a

* commit 'ee006b315a67eff925d4268cafeb6582b51d0007':
  hikey: Use Image-dtb instead of Image

Change-Id: If536a234b1d9cd431c73479ab9a0a67f01a2c2a3