Pull "Rockchip dts32 fixes for 4.16" from Heiko Stübner:
Fix for a new dtc warning.
* tag 'v4.16-rockchip-dts32fixes-2' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip:
ARM: dts: rockchip: Add missing #sound-dai-cells on rk3288