zen/zenxfi/zenxfistyle/zenmozaic: implement plugin keymaps and enable plugins

Plugins on the ZEN/ZEN X-Fi require to increase the plugin buffer size.

Change-Id: If4651c87b402060faa24530985c6e871379c8ea1

apps/plugins/cube.c

@@ -380,6 +380,16 @@
 #define CUBE_PAUSE       BUTTON_PLAY
 #define CUBE_HIGHSPEED   (BUTTON_POWER|BUTTON_DOWN)
 
+#elif (CONFIG_KEYPAD == CREATIVE_ZEN_PAD)
+#define CUBE_QUIT        BUTTON_BACK
+#define CUBE_NEXT        BUTTON_RIGHT
+#define CUBE_PREV        BUTTON_LEFT
+#define CUBE_INC         BUTTON_UP
+#define CUBE_DEC         BUTTON_DOWN
+#define CUBE_MODE        BUTTON_MENU
+#define CUBE_PAUSE       BUTTON_PLAYPAUSE
+#define CUBE_HIGHSPEED   BUTTON_SHORTCUT
+
 #else
 #error No keymap defined!
 #endif