staging: ft1000-pcmcia: remove PSEUDOSZ, use sizeof(struct pseudo_hdr) instead

PSEUDOSZ seems to define struct pseudo_hdr size.
Remove it and use sizeof(struct pseudo_hdr) directly.

Signed-off-by: Ondrej Zary <linux@rainbow-software.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>