uwb: fix variable set but not used warnings

Fix variable set but not used warnings in UWB.

Signed-off-by: Thomas Pugliese <thomas.pugliese@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --cc drivers/uwb/beacon.c
Simple merge

diff --cc drivers/uwb/est.c
Simple merge

diff --cc drivers/uwb/ie-rcv.c
Simple merge