arm64: dts: stratix10: fix incorrect I2C property for SCL signal

The correct dts property for the SCL falling time is
"i2c-scl-falling-time-ns".

Fixes: c8da1d15 ("arm64: dts: stratix10: i2c clock running out of spec")
Cc: stable@vger.kernel.org
Signed-off-by: Dinh Nguyen <dinguyen@kernel.org>

arch/arm64/boot/dts/altera/socfpga_stratix10_socdk.dts

@@ -145,7 +145,7 @@ &i2c1 {
 	status = "okay";
 	clock-frequency = <100000>;
 	i2c-sda-falling-time-ns = <890>;  /* hcnt */
-	i2c-sdl-falling-time-ns = <890>;  /* lcnt */
+	i2c-scl-falling-time-ns = <890>;  /* lcnt */
 
 	pinctrl-names = "default", "gpio";
 	pinctrl-0 = <&i2c1_pmx_func>;

arch/arm64/boot/dts/altera/socfpga_stratix10_socdk_nand.dts

@@ -141,7 +141,7 @@ &i2c2 {
 	status = "okay";
 	clock-frequency = <100000>;
 	i2c-sda-falling-time-ns = <890>;  /* hcnt */
-	i2c-sdl-falling-time-ns = <890>;  /* lcnt */
+	i2c-scl-falling-time-ns = <890>;  /* lcnt */
 
 	adc@14 {
 		compatible = "lltc,ltc2497";