iwlagn: send tx power command if defer cause by RXON not match

iwlagn: send tx power command if defer cause by RXON not match

commit 43e4e0b94984b45d52048e3ac027cac15c718b65 upstream.

During channge channel, tx power will not send to uCode, the tx power command
should send after scan complete. but should also can send after RXON command.

Stable fix identified by Stanislaw Gruszka <sgruszka@redhat.com>.

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>