ARM: dts: sun8i: Sync r40 dtsi from Linux

Sync sun8i-r40.dtsi changes from Linux with

Merge: a406778618d0 088345fc3553
Author: Stephen Rothwell <sfr@canb.auug.org.au>
Date: Tue Apr 24 14:15:02 2018 +1000

Merge branch 'akpm/master'

Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>