arm64: dts: renesas: r9a07g044: Correct GICD and GICR sizes

arm64: dts: renesas: r9a07g044: Correct GICD and GICR sizes

The RZ/G2L(C) SoC is equipped with the GIC-600. The GICD is 64KiB +
64KiB for the MBI alias (in total 128KiB), and the GICR is 128KiB per
CPU.

Fixes: 68a45525297b2 ("arm64: dts: renesas: Add initial DTSI for RZ/G2{L,LC} SoC's")
Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Link: https://lore.kernel.org/20240730122436.350013-5-prabhakar.mahadev-lad.rj@bp.renesas.com
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>