R4600 v2.0 needs a nop before tlbp.

Signed-off-by: NThiemo Seufer <ths@networkno.de>
Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

arch/mips/mm/tlbex.c

@@ -779,6 +779,8 @@ static __initdata u32 final_handler[64];
 static __init void __attribute__((unused)) build_tlb_probe_entry(u32 **p)
 {
 	switch (current_cpu_data.cputype) {
+	/* Found by experiment: R4600 v2.0 needs this, too.  */
+	case CPU_R4600:
 	case CPU_R5000:
 	case CPU_R5000A:
 	case CPU_NEVADA: