Support for rockpi-s (rockchip rk3308)

From: titus <titus_at_edc.ro>
Date: Thu, 15 Jun 2023 16:29:04 UTC 
Hello, 
I hacked some crude support for rockpi-s.
SD card works
USB works
UART works
Ethernet works (no media autodetect but works).

I added support rk3308-cru (clock), rk3308-pinctrl, rk3308-gmac mostly by
looking at the linux and openbsd code

https://forums.freebsd.org/threads/adding-support-for-the-rockpi-s.80956/#post-613952
dmesg attached

-- 

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How an engineer writes a program: Starts by debugging an empty file...
 Titus Manea  <titus@edc.ro>       |  Eastern Digital Inc.