[POWERPC] Initialize lockdep earlier

This moves lockdep_init() to before udbg_early_init() as the later
can call things that acquire spinlocks etc...  This also makes printk
safer to use earlier.
Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: NPaul Mackerras <paulus@samba.org>

arch/powerpc/kernel/setup_64.c

@@ -181,14 +181,14 @@ void __init early_setup(unsigned long dt_ptr)
 	/* Assume we're on cpu 0 for now. Don't write to the paca yet! */
 	setup_paca(0);
 
-	/* Enable early debugging if any specified (see udbg.h) */
-	udbg_early_init();
-
 	/* Initialize lockdep early or else spinlocks will blow */
 	lockdep_init();
 
 	/* -------- printk is now safe to use ------- */
 
+	/* Enable early debugging if any specified (see udbg.h) */
+	udbg_early_init();
+
  	DBG(" -> early_setup(), dt_ptr: 0x%lx\n", dt_ptr);
 
 	/*