$NetBSD$

Replicate part of
https://github.com/openssl/openssl/pull/15086

--- vendor/openssl-src-111.28.2+1.1.1w/openssl/Configurations/10-main.conf.orig	2024-08-29 18:07:36.845484717 +0000
+++ vendor/openssl-src-111.28.2+1.1.1w/openssl/Configurations/10-main.conf
@@ -950,6 +950,10 @@ my %targets = (
         shared_cflag     => "-fPIC",
         shared_extension => ".so.\$(SHLIB_VERSION_NUMBER)",
     },
+    "NetBSD-generic32" => {
+        inherit_from	 => [ "BSD-generic32" ],
+        ex_libs		 => add(threads("-latomic")),
+    },
     "BSD-generic64" => {
         inherit_from     => [ "BSD-generic32" ],
         bn_ops           => "SIXTY_FOUR_BIT_LONG",