smbios: Fix -smbios type=0, release=... for big endian hosts

smbios: Fix -smbios type=0, release=... for big endian hosts

Classic endianness bug due to careless dirty coding: assuming reading
a byte from an int variable gets the least significant byte.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Laszlo "ever the optimist" Ersek <lersek@redhat.com>
Message-id: 1370610036-10577-6-git-send-email-armbru@redhat.com
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
(cherry picked from commit 527cd96f15348f4454d5bb71f69aaeb95461c90e)

Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>