staging: ccree: remove custom bitfield macros

With all users removed or re-factored to use the standard
kernel bit fields ops we can now drop the custom
bit field macros.

Signed-off-by: Gilad Ben-Yossef <gilad@benyossef.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>