modpost: do not warn about missing MODULE_DESCRIPTION() for vmlinux.o

Building with W=1 incorrectly emits the following warning:

WARNING: modpost: missing MODULE_DESCRIPTION() in vmlinux.o

This check should apply only to modules.

Fixes: 1fffe7a34c89 ("script: modpost: emit a warning when the description is missing")
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Vincenzo Palazzo <vincenzopalazzodev@gmail.com>

+3 -2
+3 -2
scripts/mod/modpost.c
··· 1647 namespace = get_next_modinfo(&info, "import_ns", 1648 namespace); 1649 } 1650 } 1651 1652 - if (extra_warn && !get_modinfo(&info, "description")) 1653 - warn("missing MODULE_DESCRIPTION() in %s\n", modname); 1654 for (sym = info.symtab_start; sym < info.symtab_stop; sym++) { 1655 symname = remove_dot(info.strtab + sym->st_name); 1656
··· 1647 namespace = get_next_modinfo(&info, "import_ns", 1648 namespace); 1649 } 1650 + 1651 + if (extra_warn && !get_modinfo(&info, "description")) 1652 + warn("missing MODULE_DESCRIPTION() in %s\n", modname); 1653 } 1654 1655 for (sym = info.symtab_start; sym < info.symtab_stop; sym++) { 1656 symname = remove_dot(info.strtab + sym->st_name); 1657