The software revision field in the combined board config binary header was hardcoded to 1, preventing independent control from SBL SWREV configured via ti-secure-rom's sw-rev property. Add support for the optional 'sw-rev' DTS property in ti_board_config nodes, which sets the SWREV byte in the header. Defaults to 1 for backward compatibility. Signed-off-by: Shiva Tripathi <s-tripathi1@ti.com> Reviewed-by: Simon Glass <sjg@chromium.org>