staging: comedi: comedi_pcmcia.h: move PCMCIA stuff out of comedidev.h

Move the PCMCIA-specific stuff out of "comedidev.h" into
"comedi_pcmcia.h".  Comedi PCMCIA drivers now include "comedi_pcmcia.h"
instead of "comedidev.h", which now gets pulled in indirectly.

Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Reviewed-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>