arm64: dts: rockchip: change spi-max-frequency for Radxa ROCK 3C

SPI NOR flash chip may vary, so use safe(lowest) spi-max-frequency.

Signed-off-by: FUKAUMI Naoki <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Heiko Stuebner <[email protected]>

[ upstream commit: 06f6dd4d607766a527e37529f2f3f90dd1464293 ]

(cherry picked from commit dd40945a1d0e28ae6eaf9da04f8e2dcebf8233ea)
Reviewed-by: Kever Yang <[email protected]>

dts/upstream/src/arm64/rockchip/rk3566-rock-3c.dts

@@ -633,7 +633,7 @@
 	flash@0 {
 		compatible = "jedec,spi-nor";
 		reg = <0x0>;
-		spi-max-frequency = <120000000>;
+		spi-max-frequency = <104000000>;
 		spi-rx-bus-width = <4>;
 		spi-tx-bus-width = <1>;
 	};