MIPS: Set __elf_platform for Octeon.

Signed-off-by: David Daney <ddaney@caviumnetworks.com>
To: linux-mips@linux-mips.org
Patchwork: http://patchwork.linux-mips.org/patch/892/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

arch/mips/kernel/cpu-probe.c

@@ -917,6 +917,8 @@ static inline void cpu_probe_cavium(struct cpuinfo_mips *c, unsigned int cpu)
 	case PRID_IMP_CAVIUM_CN52XX:
 		c->cputype = CPU_CAVIUM_OCTEON;
 		__cpu_name[cpu] = "Cavium Octeon";
+		if (cpu == 0)
+			__elf_platform = "octeon";
 		break;
 	default:
 		printk(KERN_INFO "Unknown Octeon chip!\n");