MIPS: Octeon: Probe for Octeon II CPUs.

The OCTEON II ISA extends the original OCTEON ISA, so give it its own
__elf_platform string so optimized libraries can be selected in
userspace.
Signed-off-by: NDavid Daney <ddaney@caviumnetworks.com>
Patchwork: http://patchwork.linux-mips.org/patch/1665/Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

arch/mips/kernel/cpu-probe.c

@@ -187,6 +187,7 @@ void __init check_wait(void)
 	case CPU_BCM6358:
 	case CPU_CAVIUM_OCTEON:
 	case CPU_CAVIUM_OCTEON_PLUS:
+	case CPU_CAVIUM_OCTEON2:
 	case CPU_JZRISC:
 		cpu_wait = r4k_wait;
 		break;
@@ -953,6 +954,12 @@ static inline void cpu_probe_cavium(struct cpuinfo_mips *c, unsigned int cpu)
 		if (cpu == 0)
 			__elf_platform = "octeon";
 		break;
+	case PRID_IMP_CAVIUM_CN63XX:
+		c->cputype = CPU_CAVIUM_OCTEON2;
+		__cpu_name[cpu] = "Cavium Octeon II";
+		if (cpu == 0)
+			__elf_platform = "octeon2";
+		break;
 	default:
 		printk(KERN_INFO "Unknown Octeon chip!\n");
 		c->cputype = CPU_UNKNOWN;