Collect lint reports from apps in apexes

Lint reports were only being collected from jars in apexes, not
apps.

Bug: 188772607
Test: mainline_modules_arm64 build
Change-Id: Ie84819343f8b8ab3f43496bbc9b7876d0d0d8e70
diff --git a/apex/apex.go b/apex/apex.go
index e525aff..add506f 100644
--- a/apex/apex.go
+++ b/apex/apex.go
@@ -1587,6 +1587,7 @@
 	JacocoReportClassesFile() android.Path
 	Certificate() java.Certificate
 	BaseModuleName() string
+	LintDepSets() java.LintDepSets
 }
 
 var _ androidApp = (*java.AndroidApp)(nil)
@@ -1601,6 +1602,7 @@
 	fileToCopy := aapp.OutputFile()
 	af := newApexFile(ctx, fileToCopy, aapp.BaseModuleName(), dirInApex, app, aapp)
 	af.jacocoReportClassesFile = aapp.JacocoReportClassesFile()
+	af.lintDepSets = aapp.LintDepSets()
 	af.certificate = aapp.Certificate()
 
 	if app, ok := aapp.(interface {