New Version (v1.0) of R2 pro has swapped gmacs compared to the v00.

WAN-Port is now on gmac1 (RTL8211F) and lan-ports on gmac0 with mt7531
switch.

There is already a mt7531 dsa driver in mainline, but it needs to be
modified to work for this board.

Pre-1.0 version was not sold, so the setting can be savely overridden.

Fixes: f901aaad ("arm64: dts: rockchip: Add Bananapi R2 Pro")
Signed-off-by: Frank Wunderlich <frank-w@public-files.de>
Link: https://lore.kernel.org/r/20220402110045.104031-3-linux@fw-web.deSigned-off-by: Heiko Stuebner <heiko@sntech.de>