Simplify things a bit for callers of spl_load_info->read by refactoring it to use units of bytes instead of bl_len. This generally simplifies the logic, as MMC is the only loader which actually works in sectors. It will also allow further refactoring to remove the special-case handling of filename. spl_load_legacy_img already works in units of bytes (oops) so it doesn't need to be changed. Signed-off-by: Sean Anderson <seanga2@gmail.com> Reviewed-by: Simon Glass <sjg@chromium.org>