ASoC: sh: Make SND_SOC_RZ depend on ARCH_RZG2L

ASoC: sh: Make SND_SOC_RZ depend on ARCH_RZG2L

The SSI block is identical on Renesas RZ/G2L, RZ/G2UL and RZ/V2L SoC's, so
instead of adding dependency for each SoC's add dependency on ARCH_RZG2L.
The ARCH_RZG2L config option is already selected by ARCH_R9A07G043,
ARCH_R9A07G044 and ARCH_R9A07G054.

Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/20220423164443.146299-1-biju.das.jz@bp.renesas.com
Signed-off-by: Mark Brown <broonie@kernel.org>