To handle STM32MP15 SOCs diversity, some updates have to been done.
All EV1 ST boards produced have been added.

OP-TEE node and SCMI relatives for stm32mp157a- and stm32mp157d-ev1 are in
dedicated stm32mp157a-ev1-scmi.dtsi, which is almost as stm32mp157c- one
but without cryp1.

Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
Change-Id: Idb64b0297913df1d33ae4c0f775c6343fa20d921
Reviewed-on: https://gerrit.st.com/c/mpu/oe/st/u-boot/+/270213