sapphire: Add locales and rtl configuration Defined the essential locales list and RTL support for the sapphire board. BUG=b:502842015 TEST=Able to emerge-rauru. Change-Id: I98307a88c69e0efa5fb98411e407f39376299e0d Signed-off-by: Subrata Banik <subratabanik@google.com> Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/bmpblk/+/7775628 Tested-by: Subrata Banik <subratabanik@chromium.org> Reviewed-by: Yu-Ping Wu <yupingso@chromium.org> GitOrigin-RevId: 0a79b7b721772a1a4110660b013267c307b5964e