fix previous commit

implement button_init_device for ondio
include button.h to get prototypes

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@31621 a1c6a512-1295-4272-9138-f99709370657

firmware/target/arm/as3525/kernel-as3525.c

@@ -25,7 +25,7 @@
 #include "timer.h"
 
 #if INCREASED_SCROLLWHEEL_POLLING
-#include "button-target.h"
+#include "button.h"
 /* The scrollwheel is polled every 5 ms (the tick tasks only every 10) */
 static int poll_scrollwheel = 0;
 

firmware/target/arm/imx233/system-imx233.c

@@ -32,7 +32,7 @@
 #include "i2c-imx233.h"
 #include "lcd.h"
 #include "backlight-target.h"
-#include "button-target.h"
+#include "button.h"
 
 #define default_interrupt(name) \
     extern __attribute__((weak, alias("UIRQ"))) void name(void)

firmware/target/sh/archos/ondio/button-ondio.c

@@ -37,6 +37,10 @@
  ON/OFF: AN3, low active (assigned as OFF)
 */
 
+void button_init_device(void)
+{
+}
+
 int button_read_device(void)
 {
     int btn = BUTTON_NONE;

firmware/target/sh/archos/ondio/button-target.h

@@ -22,8 +22,6 @@
 #ifndef _BUTTON_TARGET_H_
 #define _BUTTON_TARGET_H_
 
-#define button_init_device()
-
 #define BUTTON_OFF          0x00000001
 #define BUTTON_MENU         0x00000002