gcc: Add CVE-2021-37322 to the list of CVEs to ignore

The CVE applies to binutils 2.26 and not to gcc so ignore there.

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
Signed-off-by: Tim Orling <tim.orling@konsulko.com>
Signed-off-by: Steve Sakoman <steve@sakoman.com>