binman: Fix typo in kernel-doc format for binman_symname()
Fix typo.
Fixes: 19790632648b ("binman: Support accessing binman tables at run time")
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Simon Glass <sjg@chromium.org>