[incfs] Use the new IncFs_MakeDirs() function

This gets rid of annoying warnings in logcat about not being
able to create a directory and then directory already existing

Bug: 153704006
Test: atest IncrementalServiceTest
Test: adb install megacity.apk
Change-Id: Ib718960287f93cb383c06c9b9e3d0abf1ec42916
diff --git a/services/incremental/ServiceWrappers.h b/services/incremental/ServiceWrappers.h
index 39f8541..6b0f59e 100644
--- a/services/incremental/ServiceWrappers.h
+++ b/services/incremental/ServiceWrappers.h
@@ -81,6 +81,7 @@
     virtual ErrorCode makeFile(const Control& control, std::string_view path, int mode, FileId id,
                                incfs::NewFileParams params) const = 0;
     virtual ErrorCode makeDir(const Control& control, std::string_view path, int mode) const = 0;
+    virtual ErrorCode makeDirs(const Control& control, std::string_view path, int mode) const = 0;
     virtual incfs::RawMetadata getMetadata(const Control& control, FileId fileid) const = 0;
     virtual incfs::RawMetadata getMetadata(const Control& control, std::string_view path) const = 0;
     virtual FileId getFileId(const Control& control, std::string_view path) const = 0;