hikey: BoardConfig.mk: Set command line properly for abootimg support
am: d1ec234568

* commit 'd1ec2345681cc8b943ddcf961121c55f2f0df199':
  hikey: BoardConfig.mk: Set command line properly for abootimg support

Change-Id: I52cd9a033520a8c6805aedaf6b3a8741a7c468f1