arm64: dts: qcom: sdm670-google-sargo: keep pm660 ldo8 on

According to the downstream device tree, the regulator that powers the
I/O for eMMC should not be turned off. Keep it always on just in case
the eMMC driver fails and doesn't enable it, or unloads and disables it.

Fixes: 07c8ded6 ("arm64: dts: qcom: add sdm670 and pixel 3a device trees")
Link: https://android.googlesource.com/kernel/msm/+/9ed6ddbe955d3b84d1416a1cf77e83904d1e8421/arch/arm64/boot/dts/google/sdm670-bonito-common.dtsi#105Signed-off-by: Richard Acayan <mailingradian@gmail.com>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20221205225237.200564-1-mailingradian@gmail.com

arch/arm64/boot/dts/qcom/sdm670-google-sargo.dts

@@ -256,6 +256,7 @@ vreg_l8a_1p8: ldo8 {
 			regulator-min-microvolt = <1800000>;
 			regulator-max-microvolt = <1800000>;
 			regulator-enable-ramp-delay = <250>;
+			regulator-always-on;
 		};
 
 		vreg_l9a_1p8: ldo9 {