arm64: dts: renesas: r9a07g044: Fix SCI{Rx,Tx} interrupt types

As per the latest RZ/G2L Hardware User's Manual (Rev.1.10 Apr, 2022),
the interrupt type of SCI{Rx,Tx} is edge triggered.

Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
Fixes: f9a2adcc ("arm64: dts: renesas: r9a07g044: Add SCI[0-1] nodes")
Link: https://lore.kernel.org/r/20220802101534.1401342-1-biju.das.jz@bp.renesas.com


Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>