Make local function static in mp3_playback.c and match usb_init_device prototype to implementation for Archos recorder

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@18504 a1c6a512-1295-4272-9138-f99709370657

firmware/mp3_playback.c

@@ -151,7 +151,7 @@ void demand_irq_enable(bool on)
 #endif /* #if (CONFIG_CODEC == MAS3587F) || (CONFIG_CODEC == MAS3539F) */
 
 
-void play_tick(void)
+static void play_tick(void)
 {
     if(playing && !paused)
     {

firmware/target/sh/archos/recorder/usb-recorder.c

@@ -25,6 +25,7 @@
 #include "hwcompat.h"
 #include "system.h"
 #include "usb.h"
+#include "usb-target.h"
 
 int usb_detect(void)
 {

firmware/target/sh/usb-target.h

@@ -21,6 +21,6 @@
 #ifndef USB_TARGET_H
 #define USB_TARGET_H
 
-bool usb_init_device(void);
+void usb_init_device(void);
 
 #endif