ARM: dts: sun8i: Update A83T dts(i) files from Linux-v4.18-rc3

Update all A83T devicetree dtsi and dtsi files from Linux-v4.18-rc3
with below commit:
commit 221cb9fd2ee3042689fe0e6613d0f34eb46a5af6
Author: Mylène Josserand <mylene.josserand@bootlin.com>
Date:   Fri May 4 21:05:44 2018 +0200

    ARM: dts: sun8i: Add enable-method for SMP support for the A83T SoC

Note: bananapi-m3 and cubietruck-plus board dts files has
usb_otg enabled in U-Boot which were not present in Linux.

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