Add every Apple AMD GPU type

src/backend/opencl/generators/ocl_generic_kawpow_generator.cpp

@@ -46,6 +46,7 @@ bool ocl_generic_kawpow_generator(const OclDevice &device, const Algorithm &algo
     case OclDevice::Navi_10:
     case OclDevice::Navi_12:
     case OclDevice::Navi_14:
+    case OclDevice::Navi_21:
         isNavi = true;
         break;
 

src/backend/opencl/generators/ocl_generic_rx_generator.cpp

@@ -67,6 +67,10 @@ bool ocl_generic_rx_generator(const OclDevice &device, const Algorithm &algorith
         isNavi = true;
         break;
 
+    case OclDevice::Navi_21:
+        isNavi = true;
+        break;
+
     default:
         break;
     }