Treat model == 0x4f as Broadwell

From Intel SDM Vol 3:

Table 35-29 lists MSRs that are common to processors based on the
Broadwell microarchitectures (including CPUID signatures 06_3DH,
06_47H, 06_4FH, and 06_56H).

	* config/i386/driver-i386.c (host_detect_local_cpu): Treat
	model == 0x4f as Broadwell.

From-SVN: r226749

gcc/ChangeLog

+2015-08-09  H.J. Lu  <hongjiu.lu@intel.com>
+
+	* config/i386/driver-i386.c (host_detect_local_cpu): Treat
+	model == 0x4f as Broadwell.
+
 2015-08-08  Segher Boessenkool  <segher@kernel.crashing.org>
 
 	PR rtl-optimization/67028

gcc/config/i386/driver-i386.c

@@ -749,6 +749,7 @@ const char *host_detect_local_cpu (int argc, const char **argv)
 	  cpu = "haswell";
 	  break;
 	case 0x3d:
+	case 0x47:
 	case 0x4f:
 	case 0x56:
 	  /* Broadwell.  */