If the optional `tee.bin` OP-TEE binary is missing, the image will still be
functional. Adapt the warning message accordingly.
Signed-off-by: Mathieu Othacehe <othacehe@gnu.org>
Add dedicated Makefile targets for the i.MX93 and a new imx93-u-boot.dtsi
device-tree to create binman images.
Signed-off-by: Mathieu Othacehe <m.othacehe@gmail.com>