linux-firmware: add firmware files for Marvell 8366

These files are distributed here under the existing licence for
the other Marvell firmwares in this tree and with permission from
Marvell.

Signed-off-by: Brian Cavagnolo <brian@cozybit.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>

WHENCE

@@ -638,9 +638,13 @@ Driver: mwl8k - Marvell Libertas softmac-type 802.11b/g cards
 
 File: mwl8k/fmimage_8687.fw
 File: mwl8k/helper_8687.fw
+File: mwl8k/fmimage_8366.fw
+File: mwl8k/fmimage_8366_ap-1.fw
+File: mwl8k/helper_8366.fw
 
-Licence: Redistributable. See LICENCE.Marvell for details.  Downloaded from
+Licence: Redistributable. See LICENCE.Marvell for details.  8687 images
-Marvell's "Extranet" with permission.
+downloaded from Marvell's "Extranet" with permission.  8366 images contributed
+directly by Marvell.
 
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