dmaengine: sh: Kconfig: Drop ARCH_R7S72100/ARCH_RZG2L dependency

dmaengine: sh: Kconfig: Drop ARCH_R7S72100/ARCH_RZG2L dependency

The RZ DMA controller is used across multiple Renesas SoCs, not only
RZ/A1 (R7S72100) and RZ/G2L. Limiting the build to these SoCs prevents
enabling the driver on newer platforms such as RZ/V2H(P) and RZ/V2N.

Replace the ARCH_R7S72100 || ARCH_RZG2L dependency with ARCH_RENESAS so
the driver can be built for all Renesas SoCs.

Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Vinod Koul <vkoul@kernel.org>