drm/ci: arm64.config: Enable CONFIG_DRM_ANALOGIX_ANX7625

Enable CONFIG_DRM_ANALOGIX_ANX7625 in the arm64 defconfig to get
display driver probed on the mt8183-kukui-jacuzzi-juniper machine.

arch/arm64/configs/defconfig has CONFIG_DRM_ANALOGIX_ANX7625=m,
but drm-ci don't have initrd with modules, so add
CONFIG_DRM_ANALOGIX_ANX7625=y in CI arm64 config.

Signed-off-by: Vignesh Raman <vignesh.raman@collabora.com>