staging: rtl8192e: Rename eRfSleep, eRfPowerStateToSet and RfOffReason

Rename variable eRfSleep to rf_sleep, eRfPowerStateToSet to
rf_power_state_to_set and RfOffReason to rf_off_reason to avoid CamelCase
which is not accepted by checkpatch. Omit the upfront "e" as no RfSleep
and RfPowerStateToSet exist and it makes the variables unnecessary long.

Signed-off-by: Philipp Hortmann <philipp.g.hortmann@gmail.com>
Link: https://lore.kernel.org/r/58e21e5cf86270edae93162db2395e6348c9c424.1664055213.git.philipp.g.hortmann@gmail.com


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