ARM: dts: sun6i: Update A31/A31s dts(i) files from Linux-v4.18-rc3

Update all A31/A31s devicetree dtsi and dtsi files from
Linux-v4.18-rc3 with below commit:
commit b240b419db5d624ce7a5a397d6f62a1a686009ec
Merge: 9c2dd8405c0c 518d2f43c358
Author: Linus Torvalds <torvalds@linux-foundation.org>
Date: Thu Apr 5 21:18:09 2018 -0700

Merge tag 'armsoc-dt' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

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