AS3525: we won't use threads in the bootloader

Disable tick_start()
Call kernel_init() _after_ system_init()

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@19028 a1c6a512-1295-4272-9138-f99709370657
diff --git a/bootloader/sansa_as3525.c b/bootloader/sansa_as3525.c
index 2e0f6fe..6340fbb 100644
--- a/bootloader/sansa_as3525.c
+++ b/bootloader/sansa_as3525.c
@@ -38,8 +38,8 @@
     int i;
     unsigned char buf[8];
 
-    kernel_init();
     system_init();
+    kernel_init();
 
     lcd_init();