riscv: dts: canaan: remove spi-max-frequency from controllers

spi-max-frequency is a device, not a controller  property and should be
removed.

Link: https://lore.kernel.org/lkml/[email protected]/
Tested-by: Niklas Cassel <[email protected]>
Signed-off-by: Conor Dooley <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Palmer Dabbelt <[email protected]>

Author: ConchuOD

arch/riscv/boot/dts/canaan/k210.dtsi

@@ -451,7 +451,6 @@
 				clock-names = "ssi_clk", "pclk";
 				resets = <&sysrst K210_RST_SPI0>;
 				reset-names = "spi";
-				spi-max-frequency = <25000000>;
 				num-cs = <4>;
 				reg-io-width = <4>;
 			};
@@ -467,7 +466,6 @@
 				clock-names = "ssi_clk", "pclk";
 				resets = <&sysrst K210_RST_SPI1>;
 				reset-names = "spi";
-				spi-max-frequency = <25000000>;
 				num-cs = <4>;
 				reg-io-width = <4>;
 			};
@@ -483,8 +481,7 @@
 				clock-names = "ssi_clk", "pclk";
 				resets = <&sysrst K210_RST_SPI3>;
 				reset-names = "spi";
-				/* Could possibly go up to 200 MHz */
-				spi-max-frequency = <100000000>;
+
 				num-cs = <4>;
 				reg-io-width = <4>;
 			};