staging: rtl8192e: Rename RFChangeInProgress

Rename variable RFChangeInProgress to rf_change_in_progress to avoid
CamelCase which is not accepted by checkpatch.pl.

Signed-off-by: Philipp Hortmann <philipp.g.hortmann@gmail.com>
Link: https://lore.kernel.org/r/29739986e76750395941ddaa6c4f0ffab6eb26a9.1662402870.git.philipp.g.hortmann@gmail.com


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