Update all A23/A33/r16 devicetree dtsi and dtsi files from
Linux-v4.18-rc3 with below commits.

A23:
commit bc3bd041fe766219a44688b182c260064007f0cc
Author: Miquel Raynal <miquel.raynal@bootlin.com>
Date:   Tue Apr 24 17:55:02 2018 +0200

    ARM: dts: sun8i: a23/a33: declare NAND pins

A33:
commit 88fe315d2c0a397ef42d7639addab0e021ae911d
Author: Maxime Ripard <maxime.ripard@bootlin.com>
Date:   Wed Apr 4 11:57:15 2018 +0200

    ARM: dts: sun8i: a33: Add the DSI-related nodes

r16:
commit 9621d0bd1b0d61167e1853ac68cf4869c31bcc96
Author: Miquel Raynal <miquel.raynal@bootlin.com>
Date:   Tue Apr 24 17:55:03 2018 +0200

    ARM: dts: nes: add Nintendo NES/SuperNES Classic Edition support

Note:
- Drop pinctrl from sun8i-r16-nintendo-nes-classic-edition.dts since
  sun8i-a23-a33.dtsi is added with Linux sync.
- Don't sync non U-Boot supported dts files
   sun8i-a23-ippo-q8h-v1.2.dts
   sun8i-a23-ippo-q8h-v5.dts
   sun8i-a33-et-q8-v1.6.dts
   sun8i-a33-ippo-q8h-v1.2.dts
   sun8i-r16-nintendo-nes-classic.dts
   sun8i-r16-nintendo-super-nes-classic.dts

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