[ARM] 3024/1: Add cpu_v6_proc_fin

Patch from Tony Lindgren

Machine restart calls cpu_proc_fin() to clean and disable
cache, and turn off interrupts. This patch adds proper
cpu_v6_proc_fin.
Signed-off-by: NTony Lindgren <tony@atomide.com>
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

arch/arm/mm/proc-v6.S

@@ -55,7 +55,14 @@ ENTRY(cpu_v6_proc_init)
 	mov	pc, lr
 
 ENTRY(cpu_v6_proc_fin)
-	mov	pc, lr
+	stmfd	sp!, {lr}
+	cpsid	if				@ disable interrupts
+	bl	v6_flush_kern_cache_all
+	mrc	p15, 0, r0, c1, c0, 0		@ ctrl register
+	bic	r0, r0, #0x1000			@ ...i............
+	bic	r0, r0, #0x0006			@ .............ca.
+	mcr	p15, 0, r0, c1, c0, 0		@ disable caches
+	ldmfd	sp!, {pc}
 
 /*
  *	cpu_v6_reset(loc)