staging: vt6655: refactor camelcase uCurrRSSI to current_rssi

Replace camelcase variable "uCurrRSSI" (current Received Signal Strength
Indicator) into linux kernel coding style equivalent
variable "current_rssi".

Signed-off-by: Alberto Merciai <alb3rt0.m3rciai@gmail.com>
Link: https://lore.kernel.org/r/20211127100807.3113388-1-alb3rt0.m3rciai@gmail.com


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