drivers/pcmcia fix checkpatch CodingStyle issues

[Laurent Navet]

[PATCH 1/3] drivers: pcmcia: at91_cf.c fix checkpatch error
[PATCH 2/3] drivers: pcmcia: ds.c fix checkpatch errors
[PATCH 3/3] drivers: pcmcia: electra_cf.c fix checkpatch error and

There is a lot of checkpatch issues in drivers/pcmcia directory
this fix some of them, if this kind of work is appreciated,
i can do more.

Regards.