staging: fsl-mc: clean up the device id struct

-rename the struct used for fsl-mc device ids to be more
 consistent with other busses
-remove the now obsolete and unused version fields

Signed-off-by: Stuart Yoder <stuart.yoder@nxp.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>