Revert "Revert "Run bpfix at the end of androidmk""

Bug: 38351765
Test: androidmk Android.mk > Android.bp

This reverts commit eb3186abbe.

Change-Id: I0b67e89f5096aae60c97eb6af4fd205509aac5c9

androidmk/Android.bp

@@ -29,6 +29,7 @@ blueprint_go_binary {
     deps: [
         "androidmk-parser",
         "blueprint-parser",
+        "bpfix-lib",
     ],
 }
 

androidmk/cmd/androidmk/androidmk.go

@@ -8,6 +8,8 @@ import (
 	"strings"
 	"text/scanner"
 
+	"android/soong/bpfix/bpfix"
+
 	mkparser "android/soong/androidmk/parser"
 
 	bpparser "github.com/google/blueprint/parser"
@@ -176,10 +178,18 @@ func convertFile(filename string, buffer *bytes.Buffer) (string, []error) {
 		}
 	}
 
-	out, err := bpparser.Print(&bpparser.File{
+	tree := &bpparser.File{
 		Defs:     file.defs,
 		Comments: file.comments,
-	})
+	}
+
+	// check for common supported but undesirable structures and clean them up
+	fixed, err := bpfix.FixTree(tree, bpfix.NewFixRequest().AddAll())
+	if err != nil {
+		return "", []error{err}
+	}
+
+	out, err := bpparser.Print(fixed)
 	if err != nil {
 		return "", []error{err}
 	}