Convert java_aconfig_library to bazel.

Bug: 297357579
Test: Unit test and AconfigJavaHostTest
Change-Id: Icf944cc0b2a7382107923d49b2d2ff0eb4113638
diff --git a/java/base.go b/java/base.go
index db237da..53414d9 100644
--- a/java/base.go
+++ b/java/base.go
@@ -714,6 +714,10 @@
 	return j.SdkVersion(ctx).ApiLevel
 }
 
+func (j *Module) GetDeviceProperties() *DeviceProperties {
+	return &j.deviceProperties
+}
+
 func (j *Module) MaxSdkVersion(ctx android.EarlyModuleContext) android.ApiLevel {
 	if j.deviceProperties.Max_sdk_version != nil {
 		return android.ApiLevelFrom(ctx, *j.deviceProperties.Max_sdk_version)