Sansa View: adjust two things (define fake codec, missing header file) in order

to compile the bootloader (now it should).

Change-Id: Iba6aa2f118670d66e10451eaf43dd4d83176b06a

firmware/export/config/sansaview.h

@@ -81,7 +81,8 @@
 /* Define this if you do software codec */
 #define CONFIG_CODEC SWCODEC
 /* There is no hardware tone control */
-#define HAVE_SW_TONE_CONTROLS
+/* #define HAVE_SW_TONE_CONTROLS*/
+#define HAVE_WM8731
 
 /* define this if you have a real-time clock */
 #ifndef BOOTLOADER

firmware/target/arm/sandisk/sansa-view/lcd-view.c

@@ -22,6 +22,7 @@
  ****************************************************************************/
 #include <string.h>
 #include "cpu.h"
+#include "kernel.h"
 #include "system.h"
 #include "backlight-target.h"
 #include "lcd.h"