deps: fix openssl assembly error on ia32 win32

`x86masm.pl` was mistakenly using .486 instruction set, why `cpuid` (and
perhaps others) are requiring .686 .

Fixes: #589
PR-URL: #1389
Reviewed-By: Fedor Indutny <[email protected]>
Reviewed-By: Ben Noordhuis <[email protected]>
Reviewed-By: Shigeki Ohtsu <[email protected]>

Author: indutny

deps/openssl/openssl/crypto/perlasm/x86masm.pl

@@ -82,7 +82,7 @@ sub ::file
 IF \@Version LT 800
 ECHO MASM version 8.00 or later is strongly recommended.
 ENDIF
-.486
+.686
 .MODEL	FLAT
 OPTION	DOTNAME
 IF \@Version LT 800