Return the same value for smbios.chassis.maker as smbios.system.maker (and prevents returning a space character).

Reviewed by:	grehan
Approved by:	grehan
Sponsored by:	Netflix
Differential Revision:	https://reviews.freebsd.org/D27123

usr.sbin/bhyve/smbiostbl.c

@@ -374,7 +374,7 @@ struct smbios_table_type3 smbios_type3_template = {
 };
 
 const char *smbios_type3_strings[] = {
-	" ",		/* manufacturer string */
+	"FreeBSD",	/* manufacturer string */
 	"1.0",		/* version string */
 	"None",		/* serial number string */
 	"None",		/* asset tag string */