staging: wilc1000: fix line over 80 char in handle_rcvd_ntwrk_info()

Fix 'line over 80 character' issues found by checkpatch.pl script by
use of temporary variable and avoided leading tab.

Signed-off-by: Ajay Singh <ajay.kathat@microchip.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>