Add a home panel dream flag

This will be used to guard new APIs required for the home panel dream
feature, as well as the feature itself.

Bug: 298025023
Test: NA
Change-Id: I25ee202607aaff597455707c9efdde9c05def56c

AconfigFlags.bp

@@ -56,6 +56,7 @@ aconfig_srcjars = [
     ":android.credentials.flags-aconfig-java{.generated_srcjars}",
     ":android.view.contentprotection.flags-aconfig-java{.generated_srcjars}",
     ":com.android.server.flags.pinner-aconfig-java{.generated_srcjars}",
+    ":android.service.controls.flags-aconfig-java{.generated_srcjars}",
     ":android.service.voice.flags-aconfig-java{.generated_srcjars}",
     ":android.media.tv.flags-aconfig-java{.generated_srcjars}",
     ":android.service.autofill.flags-aconfig-java{.generated_srcjars}",
@@ -598,6 +599,19 @@ java_aconfig_library {
     defaults: ["framework-minus-apex-aconfig-java-defaults"],
 }
 
+// Controls
+aconfig_declarations {
+    name: "android.service.controls.flags-aconfig",
+    package: "android.service.controls.flags",
+    srcs: ["core/java/android/service/controls/flags/*.aconfig"],
+}
+
+java_aconfig_library {
+    name: "android.service.controls.flags-aconfig-java",
+    aconfig_declarations: "android.service.controls.flags-aconfig",
+    defaults: ["framework-minus-apex-aconfig-java-defaults"],
+}
+
 // Voice
 aconfig_declarations {
     name: "android.service.voice.flags-aconfig",

core/java/android/service/controls/flags/flags.aconfig

+package: "android.service.controls.flags"
+
+flag {
+    name: "home_panel_dream"
+    namespace: "systemui"
+    description: "Enables the home controls dream feature."
+    bug: "298025023"
+}