stm32mp: stm32prog: add TEE support in stm32prog command

When OP-TEE is used, the SMC for BSEC management are not
available and the PTA provisioning for OTP must be used.

U-Boot opens the session to this PTA and use it for OTP
access.

Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com>
Signed-off-by: Patrice Chotard <patrice.chotard@foss.st.com>