ARM: dts: r8a7745: Fix SCIFB0 dmas indentation

Fixes: e0d2da54 ("ARM: dts: r8a7745: add [H]SCIF{|A|B} support")
Signed-off-by: NGeert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>