feat(stm32mp2-fdts): add fw-config file

This is a generic file to be use on all STM32MP2 boards, as what is
done for STM32MP15.

Signed-off-by: Yann Gautier <yann.gautier@st.com>
Change-Id: I4ae0cf0b7d21b1a2072b7ff5e6b98837d603c860
1 file changed