ARM: dts: stm32: Add DHCOR based DRC Compact board

Add DT for DH DRC Compact unit, which is a universal controller device.
The system has two ethernet ports, one CAN, RS485 and RS232, USB, uSD
card slot, eMMC and SDIO Wi-Fi.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Patrice Chotard <patrice.chotard@foss.st.com>
Cc: Patrick Delaunay <patrick.delaunay@foss.st.com>
Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com>
Reviewed-by: Patrick Delaunay <patrick.delaunay@foss.st.com>