Move hiddenapi to Soong

Perform hiddenapi CSV generation and dex encoding for Soong modules
in Soong.  This fixes an issue where dexpreopting was happening on
a different jar than was being installed.

Bug: 122856783
Test: m checkbuild
Test: no change out/target/common/obj/PACKAGING/hiddenapi-flags.csv
Test: only ordering change to out/target/common/obj/PACKAGING/hiddenapi-greylist.csv
Test: cts/tests/signature/runSignatureTests.sh
Change-Id: I4fc481efc29e73cb2bdaacf672e86d5f6f0075ae

java/config/makevars.go

@@ -78,4 +78,7 @@ func makeVarsProvider(ctx android.MakeVarsContext) {
 	ctx.Strict("ANDROID_MANIFEST_MERGER_DEPS", "${ManifestMergerJars}")
 	ctx.Strict("ANDROID_MANIFEST_MERGER",
 		"${JavaCmd} -classpath ${ManifestMergerClasspath} com.android.manifmerger.Merger")
+
+	ctx.Strict("CLASS2GREYLIST", "${Class2Greylist}")
+	ctx.Strict("HIDDENAPI", "${HiddenAPI}")
 }