staging: rtl8192e: Rename CurrentMPDU..., ForcedAMPDU... and ForcedMPDU...

Rename variable CurrentMPDUDensity to current_mpdu_density,
ForcedAMPDUFactor to forced_ampdu_factor and ForcedMPDUDensity to
forced_mpdu_density to avoid CamelCase which is not accepted by
checkpatch.

Signed-off-by: Philipp Hortmann <philipp.g.hortmann@gmail.com>
Link: https://lore.kernel.org/r/4fb37ad6dab9addccf99a41a861220840c123e9b.1664055213.git.philipp.g.hortmann@gmail.com


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