Add Intel Darkmont uarch (#298)

* Add Intel Darkmont uarch

- Darkmont is the uarch used in Clearwater Forest

* Add Intel Darkmont uarch

- Darkmont is the uarch used in Clearwater Forest

* Add Intel Darkmont uarch

- Darkmont is the uarch used in Clearwater Forest

Author: fbarchard

include/cpuinfo.h

@@ -384,6 +384,8 @@ enum cpuinfo_uarch {
 	cpuinfo_uarch_knights_hill = 0x00100503,
 	/** Intel Knights Mill Xeon Phi. */
 	cpuinfo_uarch_knights_mill = 0x00100504,
+	/** Intel Darkmont microarchitecture (e-core used in Clearwater Forest). */
+	cpuinfo_uarch_darkmont = 0x00100505,
 
 	/** Intel/Marvell XScale series. */
 	cpuinfo_uarch_xscale = 0x00100600,

src/x86/uarch.c

@@ -203,6 +203,8 @@ enum cpuinfo_uarch cpuinfo_x86_decode_uarch(
 							return cpuinfo_uarch_knights_landing;
 						case 0x85:
 							return cpuinfo_uarch_knights_mill;
+						case 0xDD: // Clearwater Forest
+							return cpuinfo_uarch_darkmont;
 					}
 					break;
 				case 0x0F:

tools/cpu-info.c

@@ -98,6 +98,8 @@ static const char* uarch_to_string(enum cpuinfo_uarch uarch) {
 			return "Goldmont";
 		case cpuinfo_uarch_goldmont_plus:
 			return "Goldmont Plus";
+		case cpuinfo_uarch_darkmont:
+			return "Darkmont";
 		case cpuinfo_uarch_knights_ferry:
 			return "Knights Ferry";
 		case cpuinfo_uarch_knights_corner: