API Lint: Archive lint errors

Adds reported lint errors to dist. This lets us track them and
build tooling on top.

Bug: 138440867
Test: make dist droid; ls -l out/dist/apilint
Change-Id: I75629e3d9e1a53d161d844dfac121a5998429e04
diff --git a/java/androidmk.go b/java/androidmk.go
index 5067e2f..586e1f5 100644
--- a/java/androidmk.go
+++ b/java/androidmk.go
@@ -605,10 +605,15 @@
 
 					fmt.Fprintln(w, ".PHONY: checkapi")
 					fmt.Fprintln(w, "checkapi:",
-						dstubs.apiLintTimestamp.String())
+						dstubs.Name()+"-api-lint")
 
 					fmt.Fprintln(w, ".PHONY: droidcore")
 					fmt.Fprintln(w, "droidcore: checkapi")
+
+					if dstubs.apiLintReport != nil {
+						fmt.Fprintf(w, "$(call dist-for-goals,%s,%s:%s)\n", dstubs.Name()+"-api-lint",
+							dstubs.apiLintReport.String(), "apilint/"+dstubs.Name()+"-lint-report.txt")
+					}
 				}
 				if dstubs.checkNullabilityWarningsTimestamp != nil {
 					fmt.Fprintln(w, ".PHONY:", dstubs.Name()+"-check-nullability-warnings")