Staging: crystalhd: Replace the local includes with global header

This patch replaces the local includes with the global header.
So the the crystalhd.h will be the only header included by the other files.

Signed-off-by: Jorgyano Vieira <jorgyano@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>