ARM: dts: qcom: msm8974-sony-shinano: increase load on l21 for sdhc2

SD cards would exhibit errors similar to ones described in commit
27fe0fc ("ARM: dts: msm8974-FP2: Increase load on l20 for sdhci")

This patch applies the same change to the regulator for sdhc2.

Signed-off-by: Valeriy Klimin <vdos63@gmail.com>
Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Link: https://lore.kernel.org/r/20240621-sony-aries-v2-3-dddf10722522@gmail.com
Signed-off-by: Bjorn Andersson <andersson@kernel.org>

Author: TheOrangeCat

arch/arm/boot/dts/qcom/qcom-msm8974pro-sony-xperia-shinano-common.dtsi

@@ -380,6 +380,8 @@
 		pm8941_l21: l21 {
 			regulator-min-microvolt = <2950000>;
 			regulator-max-microvolt = <2950000>;
+			regulator-system-load = <500000>;
+			regulator-allow-set-load;
 			regulator-boot-on;
 		};