YH8xx,YH9xx: Keymap improvement

The main "innovation" in this patch are two "virtual buttons"
for the record switch on YH92x targets. When the switch state
changes, a single BUTTON_REC_SW_ON or .._OFF button event will
be generated. Thus keymap code can react on switching, but
not on the actual state of the switch.

Wherever sensible, the following user scheme is applied:
- use PLAY as confirm button
- use REW button or Long REW to exit
- use REC (YH820) or FFWD (YH92X) as modifier key for button combos

Change-Id: Ic8d1db9cc6869daed8dda98990dfdf7f6fd5d5a1

apps/lang/islenska.lang

@@ -3289,6 +3289,7 @@
     gigabeats: "BACK = Revert"
     gogearsa9200: "LEFT = Revert"
     vibe500: "CANCEL = Revert"
+    samsungyh*: "REW = Revert"
   </source>
   <dest>
     *: none
@@ -3304,6 +3305,7 @@
     gigabeats: "BACK = Revert"
     gogearsa9200: "LEFT = Revert"
     vibe500: "CANCEL = Revert"
+    samsungyh*: "REW = Revert"
   </dest>
   <voice>
     *: none
@@ -3371,6 +3373,7 @@
     iriverh100,iriverh120,iriverh300: "The disk is full. Press STOP to continue."
     iaudiom5,iaudiox5: "The disk is full. Press POWER to continue."
     sansae200*,sansac200*,vibe500: "The disk is full. Press PREV to continue."
+    samsungyh*: "Disk full. Press LEFT to continue."
   </source>
   <dest>
     *: none
@@ -3378,6 +3381,7 @@
     iriverh100,iriverh120,iriverh300: "Harði diskurinn er fullur. Ýtið á STOP til að halda áfram."
     iaudiom5,iaudiox5: "Harði diskurinn er fullur. Ýtið á POWER til að halda áfram."
     sansae200*,sansac200*,vibe500: "Harði diskurinn er fullur. Ýtið á PREV til að halda áfram."
+    samsungyh*: "Harði diskurinn er fullur. Ýtið á LEFT til að halda áfram."
   </dest>
   <voice>
     *: none