ARM: kirkwood: fdt: facilitate new boards during fdt migration

Move all dreamplug-specific code out of board-dt.c and into
board-dreamplug.c.  This way new boards that are added during the
conversion to fdt don't clutter up board-dt.c.

Signed-off-by: Jason Cooper <jason@lakedaemon.net>
diff --git a/arch/arm/mach-kirkwood/common.h b/arch/arm/mach-kirkwood/common.h
index c382447..4737578 100644
--- a/arch/arm/mach-kirkwood/common.h
+++ b/arch/arm/mach-kirkwood/common.h
@@ -51,6 +51,14 @@
 void kirkwood_audio_init(void);
 void kirkwood_restart(char, const char *);
 
+/* board init functions for boards not fully converted to fdt */
+#ifdef CONFIG_MACH_DREAMPLUG_DT
+void dreamplug_init(void);
+#else
+static inline void dreamplug_init(void) {};
+#endif
+
+/* early init functions not converted to fdt yet */
 char *kirkwood_id(void);
 void kirkwood_l2_init(void);
 void kirkwood_rtc_init(void);