It will be used ADG clock initial settings, and will be
sound codec's initial system clock which needs maximum clock frequency.
Thus, descending order is required

Fixes: d37d2b3c ("arm64: dts: salvator-x: add 12288000 for sound ADG")
Fixes: 0b03c32d ("arm64: dts: r8a7795: salvator-x: Add support for R-Car H3 ES2.0")
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>