arm64: dts: renesas: r8a779f0: Add UFS node

Add UFS node for R-Car S4-8 (r8a779f0).

Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/20220603110524.1997825-7-yoshihiro.shimoda.uh@renesas.com


[geert: Move ufs30-clk to preserve sort order]
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>