arm64: dts: rockchip: Fix SD card controller probe on Pinephone Pro

Voltage constraints on vccio_sd are invalid. They don't match the voltages
that LDO9 can generate, and this causes rk808-regulator driver to fail
to probe with -EINVAL when it tries to apply the constraints during boot.

Fix the constraints to something that LDO9 can be actually configured for.

Fixes: 78a21c7d ("arm64: dts: rockchip: Add initial support for Pine64 PinePhone Pro")
Signed-off-by: Ondrej Jirman <megi@xff.cz>
Reviewed-by: Caleb Connolly <kc@postmarketos.org>
Reviewed-by: Tom Fitzhenry <tom@tom-fitzhenry.me.uk>
Tested-by: Tom Fitzhenry <tom@tom-fitzhenry.me.uk>
Link: https://lore.kernel.org/r/20220904233652.3197885-1-megi@xff.cz


Signed-off-by: Heiko Stuebner <heiko@sntech.de>