The SPL is only supported by STM32MP15x not by all the SOC with STM32MP arch. Only TFABOOT is supported in next products. Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com> Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com> Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com>