ASoC: codecs: Rockchip on-SoC codecs should depend on ARCH_ROCKCHIP

The various Rockchip embedded audio codecs are only present on Rockchip
SoCs.  Hence add dependencies on ARCH_ROCKCHIP, to prevent asking the
user about these drivers when configuring a kernel without Rockchip SoC
support.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://msgid.link/r/6cdbaf4afcf4d2059b257f6cb3a8a61bf5e17688.1712676714.git.geert+renesas@glider.be
Signed-off-by: Mark Brown <broonie@kernel.org>