sunxi: A64: Update .dts/.dtsi files

sunxi: A64: Update .dts/.dtsi files

Update the .dts/.dtsi file from the Linux sunxi/dt64-for-4.20 tree:
commit 679294497be31596e1c9c61507746d72b6b05f26
Author: Rodrigo Exterckötter Tjäder <rodrigo@tjader.xyz>
Date:   Wed Sep 26 19:48:24 2018 +0000
    arm64: dts: allwinner: a64: a64-olinuxino: set the PHY TX delay

Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Acked-by: Maxime Ripard <maxime.ripard@bootlin.com>
Reviewed-by: Jagan Teki <jagan@openedev.com>
Gbp-Pq: Topic pinebook
Gbp-Pq: Name 0003-sunxi-A64-Update-.dts-.dtsi-files.patch