Add device tree for the WolfVision PF5 mainboard. It features
 - Rockchip RK3568 SoC
 - eMMC
 - RTC with backup battery
 - on-board PDM microphone
 - 12V DC jack
 - HDMI output
 - USB-C device port
as well as various expansion headers for different extension boards.
Signed-off-by: Michael Riesch <michael.riesch@wolfvision.net>
Link: https://lore.kernel.org/r/20240325-feature-wolfvision-pf5-v1-3-5725445f792a@wolfvision.netSigned-off-by: Heiko Stuebner <heiko@sntech.de>