ARM: dts: stm32: Add DHSOM based DRC02 board

Add DT for DH DRC02 unit, which is a universal controller device.
The system has two ethernet ports, two CANs, RS485 and RS232, USB,
capacitive buttons and an OLED display.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Patrice Chotard <patrice.chotard@st.com>
Cc: Patrick Delaunay <patrick.delaunay@st.com>
Reviewed-by: Patrice Chotard <patrice.chotard@st.com>
Reviewed-by: Patrick Delaunay <patrick.delaunay@st.com>
diff --git a/arch/arm/dts/Makefile b/arch/arm/dts/Makefile
index d573cc6..ef36ebd 100644
--- a/arch/arm/dts/Makefile
+++ b/arch/arm/dts/Makefile
@@ -938,6 +938,7 @@
 	stm32mp157c-ed1.dtb \
 	stm32mp157c-ev1.dtb \
 	stm32mp157c-odyssey.dtb \
+	stm32mp15xx-dhcom-drc02.dtb \
 	stm32mp15xx-dhcom-pdk2.dtb \
 	stm32mp15xx-dhcor-avenger96.dtb