staging: fsl-mc: add missing includes to fsl-mc-private.h

fsl-mc-private.h references several definitions that it does not explicitly
have includes for. Up until now we've gotten lucky due to include ordering
that things compile.  Add the missing includes.

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