Prepare for hipMemoryType changes in ROCm 6

This is a breaking change happening in ROCm 6.  We guard on the new
enum value.

The name change has been around since 5.5, so that's why we're not
guarding it here.

lib/targets/hip/malloc.cpp

@@ -528,12 +528,15 @@ namespace quda
       errorQuda("hipPointerGetAttributes returned error: %s\n", hipGetErrorString(error));
     }
 
-    switch (attr.memoryType) {
+    switch (attr.type) {
+#if HIP_VERSION_MAJOR >= 6
+    case hipMemoryTypeUnregistered: return QUDA_CPU_FIELD_LOCATION;
+#endif  // HIP_VERSION_MAJOR >= 6
     case hipMemoryTypeHost: return QUDA_CPU_FIELD_LOCATION;
     case hipMemoryTypeDevice: return QUDA_CUDA_FIELD_LOCATION;
     case hipMemoryTypeArray: return QUDA_CUDA_FIELD_LOCATION;
     case hipMemoryTypeUnified: return QUDA_CUDA_FIELD_LOCATION; ///< Not used currently
-    default: errorQuda("Unknown memory type %d\n", attr.memoryType); return QUDA_INVALID_FIELD_LOCATION;
+    default: errorQuda("Unknown memory type %d\n", attr.type); return QUDA_INVALID_FIELD_LOCATION;
     }
   }