objtool-wrapper: Update Debian packaging

6cf17f65 (#17456) introduced a change to configure.ac which
breaks the patching done in the Debian packages DKMS source
installation phase. This results in a failed module build.

Adapt the awk script doing the patching to handle the added
AC_CONFIG_FILE entry.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Tested-by: Shengqi Chen <harry-chen@outlook.com>
Signed-off-by: Attila Fülöp <attila@fueloep.org>
Closes #17633
Closes #17646