arm64: dts: qcom: sm7225-fairphone-fp4: Enable CCI pull-up

Enable vreg_l6p, which is the voltage source for the pull-up resistor of
the CCI busses.

This ensures that I2C communication works as expected.

Signed-off-by: Luca Weiss <luca.weiss@fairphone.com>
Reviewed-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Link: https://lore.kernel.org/r/20251210-fp4-cam-prep-v1-4-0eacbff271ec@fairphone.com
Signed-off-by: Bjorn Andersson <andersson@kernel.org>

arch/arm64/boot/dts/qcom/sm7225-fairphone-fp4.dts

@@ -693,6 +693,8 @@
 				regulator-name = "vreg_l6p";
 				regulator-min-microvolt = <1500000>;
 				regulator-max-microvolt = <1800000>;
+				/* Pull-up for CCI I2C busses */
+				regulator-always-on;
 			};
 
 			vreg_l7p: ldo7 {