u-boot-rockchip: update require path
u-boot-rockchip: update require path

The oe-core recipe was updated (2017.05 -> 2017.07), this recipe needed to
be updated to suit. However, this u-boot (from rockchip) is still at version
2017.05.

Signed-off-by: Trevor Woerner <8835777cd84fba3d7873eabbbe1f2de2d3f25b00@gmail.com>

hizukiayaka/meta-rockchip,hizukiayaka/meta-rockchip,hizukiayaka/meta-rockchip,twoerner/meta-rockchip-twoerner,twoerner/meta-rockchip-twoerner