dax: enable dax on arm64

After backporting patch series of enabling memory hot remove on aarch64
to v5.4.x, we finally could enable nvdimm/dax on aarch64.

Fixes: #2601
Depends-on: github.com/kata-containers/packaging#1006

Signed-off-by: Penny Zheng <penny.zheng@arm.com>

virtcontainers/qemu_arm64.go

@@ -140,6 +140,7 @@ func newQemuArch(config HypervisorConfig) qemuArch {
 			kernelParamsDebug:     kernelParamsDebug,
 			kernelParams:          kernelParams,
 			disableNvdimm:         config.DisableImageNvdimm,
+			dax:                   true,
 		},
 	}