ARM: dts: stm32: add usr3 LED node to stm32f769-disco
As indicated by the board silkscreen, there are three user LEDs.
Add the missing one.
Signed-off-by: Dario Binacchi <dario.binacchi@amarulasolutions.com>
Link: https://lore.kernel.org/r/20250217114513.1098844-2-dario.binacchi@amarulasolutions.com
Signed-off-by: Alexandre Torgue <alexandre.torgue@foss.st.com>
authored by