This bumps the Gemini kernel to use v6.1. While there is no
reason to stay with v5.15, I personally use newer upstream
kernels constantly and they are tested and work well. OpenWrt's
6.1 needs more time until it can be switched.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>