pico-imx7d: Add support for update SPL using DFU

Add spl entry on dfu_alt_info to be able to update U-Boot with SPL
for pico imx7d board.

Signed-off-by: Fabio Berton <fabio.berton@ossystems.com.br>
Signed-off-by: Otavio Salvador <otavio@ossystems.com.br>
1 file changed