plugins: Improve usability of iPod keymaps

- Reduce need to press multiple buttons at
the same time to quit a plugin

- Have "Menu" be default way to quit plugins or
to access plugin menu

- Fall back to (Long) "Select" or Long "Menu"
in cases where Menu button isn't available
(e.g. in ImageViewer and many games)

out of scope:
boomshine, lua_scripts, Rockpaint,
Doom, Duke3D, Pacbox, Quake,
Sgt-Puzzles, Wolf3D, XWorld,
Minesweeper, Pixel Painter, Spacerocks

Change-Id: I6d4dc7174695fe4b8ee9cbaccb21bdbfe6af5c48

apps/plugins/bubbles.c

@@ -79,7 +79,6 @@ enum {
 #define ANGLE_STEP_REP      6
 
 #define BUBBLES_QUIT1       PLA_EXIT
-#define BUBBLES_QUIT2       PLA_CANCEL
 
 /* these are better off shooting with up */
 #if (CONFIG_KEYPAD == SAMSUNG_YH820_PAD) \
@@ -92,10 +91,19 @@ enum {
 #define BUBBLES_FIRE        PLA_UP
 #define BUBBLES_FIRE_REPEAT PLA_UP_REPEAT
 #define BUBBLES_PAUSE       PLA_SELECT
+#define BUBBLES_QUIT2       PLA_CANCEL
+#elif (CONFIG_KEYPAD == IPOD_1G2G_PAD) \
+    || (CONFIG_KEYPAD == IPOD_3G_PAD) \
+    || (CONFIG_KEYPAD == IPOD_4G_PAD)
+#define BUBBLES_FIRE        PLA_SELECT
+#define BUBBLES_FIRE_REPEAT PLA_SELECT_REPEAT
+#define BUBBLES_PAUSE       PLA_DOWN
+#define BUBBLES_QUIT2       PLA_UP
 #else
 #define BUBBLES_FIRE        PLA_SELECT
 #define BUBBLES_FIRE_REPEAT PLA_SELECT_REPEAT
 #define BUBBLES_PAUSE       PLA_UP
+#define BUBBLES_QUIT2       PLA_CANCEL
 #endif
 
 /* external bitmaps */