NDK Api Coverage

Enable ndk_library processing for api code coverage. All parsed generated xml files will be dist and later upload to artifacts.

Test: m ndk

Change-Id: I76ac52f60d5bbb106308658cf7417b845af9a49e
diff --git a/cc/androidmk.go b/cc/androidmk.go
index 3ce1a89..8f5ce38 100644
--- a/cc/androidmk.go
+++ b/cc/androidmk.go
@@ -457,6 +457,9 @@
 		entries.SetString("LOCAL_MODULE_PATH", path)
 		entries.SetString("LOCAL_MODULE_STEM", stem)
 		entries.SetBool("LOCAL_NO_NOTICE_FILE", true)
+		if c.parsedCoverageXmlPath.String() != "" {
+			entries.SetString("SOONG_NDK_API_XML", "$(SOONG_NDK_API_XML) "+c.parsedCoverageXmlPath.String())
+		}
 	})
 }