staging: ft1000: unify struct ft1000_info between USB and PCMCIA drivers

Unify struct ft1000_info between ft1000-usb and ft1000-pcmcia and move it to
common ft1000.h.

Signed-off-by: Ondrej Zary <linux@rainbow-software.org>
Tested-by: Marek Belisko <marek.belisko@open-nandra.com>
Review-by: Marek Belisko <marek.belisko@open-nandra.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>