arm64/dts: update ALPM brightness thresholds

Bug: 68254840
Change-Id: If0356b558a4415836e7b0a6cdda510722022ea93
Signed-off-by: Patrick Tjin <pattjin@google.com>
(cherry picked from commit ba111ee2)

arch/arm64/boot/dts/lge/msm8998-taimen-panel.dtsi

@@ -50,6 +50,8 @@
 	qcom,mdss-dsi-t-clk-post = <0x0B>;
 	qcom,mdss-dsi-t-clk-pre = <0x23>;
 	qcom,mdss-dsi-bl-max-level = <225>;
+	qcom,alpm-bl-threshold = <21>;
+	qcom,alpm-dim-threshold = <6>;
 };
 
 &dsi_sw43402_dsc_qhd_cmd_rev2 {
@@ -60,6 +62,8 @@
 	qcom,mdss-dsi-t-clk-post = <0x0B>;
 	qcom,mdss-dsi-t-clk-pre = <0x23>;
 	qcom,mdss-dsi-bl-max-level = <225>;
+	qcom,alpm-bl-threshold = <21>;
+	qcom,alpm-dim-threshold = <6>;
 };
 
 &dsi_sw43402_dsc_qhd_cmd {
@@ -70,6 +74,8 @@
 	qcom,mdss-dsi-t-clk-post = <0x0B>;
 	qcom,mdss-dsi-t-clk-pre = <0x23>;
 	qcom,mdss-dsi-bl-max-level = <225>;
+	qcom,alpm-bl-threshold = <21>;
+	qcom,alpm-dim-threshold = <6>;
 };
 
 &dsi_sw49408_dsc_qhd_cmd {