Add a file to support over USB the STMicroelectronics tool
STM32CubeProgrammer in BL2 for STM32MP15x platform.
This tools is based on DFU stack.
Change-Id: I48a8f772cb0e9b8be24c06847f724f0470c0f917
Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com>