iwlwifi: remove plcp_check module parameter

Nobody will ever wants to run without this. Make it true always.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

diff --cc drivers/net/wireless/iwlwifi/dvm/rx.c
Simple merge

diff --cc drivers/net/wireless/iwlwifi/iwl-drv.c
Simple merge

diff --cc drivers/net/wireless/iwlwifi/iwl-modparams.h
Simple merge