iwlwifi: clarify hardware error message

When a hardware error is detected we need to be clear about that
and not create impression that the microcode is able to deal
with it.

Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

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

diff --cc drivers/net/wireless/iwlwifi/iwl3945-base.c
Simple merge