arm64: dts: renesas: r8a7795: move scif node into alphabetical order

Move scif node so that sub-nodes of the root node are in
alphabetical order.

Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Tested-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>