staging: r8188eu: rename camelcase variable uintPeerChannel

Rename camelcase hungarian notated variable uintPeerChannel into
peer_channel.

Signed-off-by: Alberto Merciai <alb3rt0.m3rciai@gmail.com>
Link: https://lore.kernel.org/r/20220104160945.460113-1-alb3rt0.m3rciai@gmail.com


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