[SCSI] fdomain: fix PCMCIA-related warnings

fdomain is one of those drivers that is compiled twice, once for PCMCIA
and once for non-PCMCIA.  The resultant two-driver setup leaves a bit of
dead code and data in the non-PCMCIA case, which gcc complains about.

Shuffle ifdefs a bit to eliminate the conditionally-dead code, and
the compiler warnings.

Signed-off-by: Jeff Garzik <jeff@garzik.org>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>