ARM: dts: gemini: wbd111: Use RedBoot partion parser

This is clearly a RedBoot partitioned device with 0x20000
sized erase blocks.

Link: https://lore.kernel.org/r/20221204190230.3345590-2-linus.walleij@linaro.org


Signed-off-by: Linus Walleij <linus.walleij@linaro.org>