moxa: Fix firmware file names.

Too many decimal to hex converstions of the USB product ID resulted in
the firmware files having the wrong name. Rename them, and update the
WHENCE file with the new names.
Signed-off-by: Andrew Lunn <andrew@lunn.ch>

WHENCE

@@ -2225,15 +2225,15 @@ License: Redistributable. See LICENSE.amd-ucode for details
 
 Driver: mxuport - MOXA UPort USB Serial hub driver
 
-File: moxa/moxa-04e2.fw
-File: moxa/moxa-04e3.fw
-File: moxa/moxa-0582.fw
-File: moxa/moxa-05aa.fw
-File: moxa/moxa-05ab.fw
-File: moxa/moxa-064d.fw
-File: moxa/moxa-0652.fw
-File: moxa/moxa-0675.fw
-File: moxa/moxa-067a.fw
+File: moxa/moxa-1250.fw
+File: moxa/moxa-1251.fw
+File: moxa/moxa-1410.fw
+File: moxa/moxa-1450.fw
+File: moxa/moxa-1451.fw
+File: moxa/moxa-1613.fw
+File: moxa/moxa-1618.fw
+File: moxa/moxa-1653.fw
+File: moxa/moxa-1658.fw
 
 License:
 The software accompanying this license statement (the “Software”)