staging: r8188: remove fab mask from power transitions

Remove the fab mask from the steps of the power transitions.
The fab mask is not used, all values are allowed for all steps.

Signed-off-by: Martin Kaiser <martin@kaiser.cx>
Link: https://lore.kernel.org/r/20211219183926.4746-5-martin@kaiser.cx


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>