arm64: dts: rockchip: add BT/wifi nodes to Pinephone Pro

Pinephone Pro includes a AzureWave AW-CM256SM wifi (sdio0) and
bt (uart0) combo module, which is based on Cypress
CYP43455 (BCM43455).

The CYP43455 datasheet ("Power-Up Sequence and Timing") documents:
* needing to wait 10ms between consecutive WL_REG_ON toggles
* needing to wait 110ms between power-on and SDIO access.

Signed-off-by: Tom Fitzhenry <tom@tom-fitzhenry.me.uk>
Reviewed-by: Ondřej Jirman <megi@xff.cz>
Link: https://lore.kernel.org/r/20221002092809.451501-1-tom@tom-fitzhenry.me.uk


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