arm64: defconfig: Enable the Hantro decoder

Enable the Hantro decoder driver so it can be enabled by
default on i.MX8M and Rockchip platforms.
Signed-off-by: NFabio Estevam <festevam@gmail.com>
Reviewed-by: NGuido Günther <agx@sigxcpu.org>
Signed-off-by: NMartin Kepplinger <martin.kepplinger@puri.sm>
Signed-off-by: NShawn Guo <shawnguo@kernel.org>

arch/arm64/configs/defconfig

@@ -918,6 +918,9 @@ CONFIG_VIRTIO_MMIO=y
 CONFIG_XEN_GNTDEV=y
 CONFIG_XEN_GRANT_DEV_ALLOC=y
 CONFIG_MFD_CROS_EC_DEV=y
+CONFIG_STAGING=y
+CONFIG_STAGING_MEDIA=y
+CONFIG_VIDEO_HANTRO=m
 CONFIG_CHROME_PLATFORMS=y
 CONFIG_CROS_EC=y
 CONFIG_CROS_EC_I2C=y