device: fix casting pointer to enum for sriov_reset_on_deactivate_cb()

Avoids a compiler warning:

    ../src/devices/nm-device.c:16079:26: error: cast to smaller integer type 'NMDeviceStateReason' from 'gpointer' (aka 'void *') [-Werror,-Wvoid-pointer-to-enum-cast]
            deactivate_ready (self, (NMDeviceStateReason) reason);
                                    ^~~~~~~~~~~~~~~~~~~~~~~~~~~~

Fixes: 121c58f0 ('core: set number of SR-IOV VFs asynchronously')
(cherry picked from commit 918ebd60)
(cherry picked from commit 32641b9f)
(cherry picked from commit c24888be)
(cherry picked from commit 3d274594)

src/devices/nm-device.c

@@ -15164,7 +15164,7 @@ sriov_deactivate_cb (GError *error, gpointer user_data)
 	if (nm_utils_error_is_cancelled (error, TRUE))
 		return;
 
-	deactivate_ready (self, (NMDeviceStateReason) reason);
+	deactivate_ready (self, GPOINTER_TO_INT (reason));
 }
 
 static void
@@ -15466,7 +15466,7 @@ _set_state_full (NMDevice *self,
 				                0,
 				                NM_TERNARY_TRUE,
 				                sriov_deactivate_cb,
-				                nm_utils_user_data_pack (self, (gpointer) reason));
+				                nm_utils_user_data_pack (self, GINT_TO_POINTER (reason)));
 			}
 		}