oprofile, x86: Add support for AMD family 15h

This patch adds support for AMD family 15h (Interlagos/Valencia/
Zambezi) cpus.

Signed-off-by: Robert Richter <robert.richter@amd.com>
diff --git a/arch/x86/oprofile/nmi_int.c b/arch/x86/oprofile/nmi_int.c
index 4e8baad..358c8b9 100644
--- a/arch/x86/oprofile/nmi_int.c
+++ b/arch/x86/oprofile/nmi_int.c
@@ -732,6 +732,9 @@
 		case 0x14:
 			cpu_type = "x86-64/family14h";
 			break;
+		case 0x15:
+			cpu_type = "x86-64/family15h";
+			break;
 		default:
 			return -ENODEV;
 		}