iwlegacy: use FH49_ prefix in 4965 code

Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>

diff --cc drivers/net/wireless/iwlegacy/4965-mac.c
Simple merge

diff --cc drivers/net/wireless/iwlegacy/4965.c
Simple merge

diff --cc drivers/net/wireless/iwlegacy/common.h
Simple merge

diff --cc drivers/net/wireless/iwlegacy/iwl-fh.h
Simple merge