Staging: vme: VMIVME-7805 board support

VMIVME-7805 board has a special control register that has to be used in
order to activate the VME bus access via the Universe II bridge.
This control register also handles endianess convertion.

Signed-off-by: Arthur Benilov <arthur.benilov@iba-group.com>
Signed-off-by: Vincent Bossier <vincent.bossier@iba-group.com>
Acked-by: Martyn Welch <martyn.welch@ge.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>