staging: comedi: Move COMEDI_MITE and COMEDI_NI_TIOCMD

Move the CONFIG_COMEDI_MITE config options into the `if
COMEDI_PCI_DRIVERS` block so that the `depends on PCI` condition can be
omitted.  Move the CONFIG_COMEDI_NI_TIOCMD config option to the same
block as it selects COMEDI_MITE.  Move the CONFIG_COEMDI_NI_TIO config
option slightly for aesthetic reasons without changing its conditions.

Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>