COMPID-3324: Clean GEMM kernels

Signed-off-by: Georgios Pinitas <georgios.pinitas@arm.com>
Change-Id: I170de1671e061a78740caee31fb4a1b8642c1369
Reviewed-on: https://review.mlplatform.org/c/ml/ComputeLibrary/+/3505
Tested-by: Arm Jenkins <bsgcomp@arm.com>
Comments-Addressed: Arm Jenkins <bsgcomp@arm.com>
Reviewed-by: Michele Di Giorgio <michele.digiorgio@arm.com>
diff --git a/src/runtime/CPUUtils.cpp b/src/runtime/CPUUtils.cpp
index d8f01a9..e874f0f 100644
--- a/src/runtime/CPUUtils.cpp
+++ b/src/runtime/CPUUtils.cpp
@@ -73,6 +73,7 @@
     {
         case CPUModel::GENERIC_FP16_DOT:
         case CPUModel::A55r1:
+        case CPUModel::X1:
             return true;
         default:
             return false;
@@ -86,6 +87,7 @@
         case CPUModel::GENERIC_FP16:
         case CPUModel::GENERIC_FP16_DOT:
         case CPUModel::A55r1:
+        case CPUModel::X1:
             return true;
         default:
             return false;
@@ -121,6 +123,9 @@
                     model = CPUModel::A55r0;
                 }
                 break;
+            case 0xd44: // X1
+                model = CPUModel::X1;
+                break;
             case 0xd0a: // A75
                 if(variant != 0)
                 {