v1-u: Add x1s manifest

<?xml version="1.0" encoding="UTF-8"?>

<manifest>

  <project name="fcuzzocrea/android_device_samsung_x1s" path="device/samsung/x1s" remote="github" revision="lineage-21-qpr3"/>

  <project name="fcuzzocrea/android_device_samsung_universal9830-common" path="device/samsung/universal9830-common" remote="github" revision="lineage-21-qpr3"/>

  <project name="fcuzzocrea/android_kernel_samsung_universal9830" path="kernel/samsung/universal9830" remote="github" revision="lineage-21-qpr3"/>

  <project name="LineageOS/android_hardware_samsung_slsi-linaro_openmax" path="hardware/samsung_slsi-linaro/openmax" remote="github" revision="lineage-21" />

  <project name="LineageOS/android_hardware_samsung_slsi-linaro_config" path="hardware/samsung_slsi-linaro/config" remote="github" revision="lineage-21" />

  <project name="LineageOS/android_hardware_samsung_slsi-linaro_graphics" path="hardware/samsung_slsi-linaro/graphics" remote="github" revision="lineage-21" />

  <project name="LineageOS/android_hardware_samsung_slsi-linaro_interfaces" path="hardware/samsung_slsi-linaro/interfaces" remote="github" revision="lineage-21" />

  <project name="LineageOS/android_hardware_samsung_slsi-linaro_exynos" path="hardware/samsung_slsi-linaro/exynos" remote="github" revision="lineage-21" />

  <project name="LineageOS/android_hardware_samsung_slsi-linaro_exynos5" path="hardware/samsung_slsi-linaro/exynos5" remote="github" revision="lineage-21" />

  <project name="LineageOS/android_hardware_samsung" path="hardware/samsung" remote="github" revision="lineage-21" />

  <project name="LineageOS/android_device_samsung_slsi_sepolicy" path="device/samsung_slsi/sepolicy" remote="github" revision="lineage-21" />

</manifest>