deps: fix openssl assembly error on ia32 win32

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

PR: #9451
PR-URL: https://github.com/joyent/node/pull/9451
Reviewed-By: Julien Gilli <julien.gilli@joyent.com>

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

@@ -80,7 +80,7 @@ TITLE	$_[0].asm
 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