avision: add AD345F support as "basic"

Tested with Avision AD345F model number DL-1802B.
Flatbed and ADF duplex scanning available.

Known limitation: ADF scanning is only capable to scan one sheet
at a time via automatic feeder. Providing 2+ sheets breaks backend
and scanner needs to be rebooted.

Signed-off-by: Nikolai Kostrigin <nickel@altlinux.org>
Tested-by: Mikhail Chernonog <snowmix@altlinux.org>

backend/avision.c

@@ -159,6 +159,15 @@
 
 static Avision_HWEntry Avision_Device_List [] =
   {
+    { NULL, NULL,
+      0x0638, 0x2E59,
+      "Avision", "AD345F",
+      AV_INT_BUTTON | AV_CANCEL_BUTTON | AV_USE_GRAY_FILTER,
+      { 0, {0, 0}, {{0, 0}, {0, 0}} }
+    },
+    /* comment="duplex! sheetfed + flatbed scanner" */
+    /* status="basic" */
+
     { "AVISION", "AV100CS",
       0, 0,
       "Avision", "AV100CS",

doc/descriptions/avision.desc

@@ -29,6 +29,12 @@
 :mfg "Avision"
 :url "http://www.avision.com"
 
+:model "AD345F"
+:interface "USB"
+:usbid "0x0638" "0x2e59"
+:comment "sheetfed duplex + flatbed scanner; ADF limitation: one sheet per one scan, scanner reboot needed otherwise"
+:status :basic
+
 :model "AV100CS"
 :interface "SCSI"
 :status :untested