fetch, fetch2: Get rid of DeprecationWarning notice

* This patch fixes a cosmetic issue currently we get with master

WARNING: /home/kraj/work/bitbake/lib/bb/fetch2/__init__.py:733:
DeprecationWarning: Call to deprecated function bb.mkdirhier: Please use bb.utils.mkdirhier instead.  bb.mkdirhier("%s/%s" % (rootdir, destdir))

(Bitbake rev: 36fe59ce314c295d239b76de34c8714def2c32d5)

Signed-off-by: Khem Raj <raj.khem@gmail.com>
Signed-off-by: Chris Larson <chris_larson@mentor.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

bitbake/lib/bb/fetch2/__init__.py

@@ -731,7 +731,7 @@ class FetchMethod(object):
                        destdir = urldata.path.rsplit("/", 1)[0]
                     else:
                        destdir = "."
-                    bb.mkdirhier("%s/%s" % (rootdir, destdir))
+                    bb.utils.mkdirhier("%s/%s" % (rootdir, destdir))
                     cmd = 'cp %s %s/%s/' % (file, rootdir, destdir)
 
         if not cmd:
@@ -742,7 +742,7 @@ class FetchMethod(object):
         os.chdir(rootdir)
         if 'subdir' in urldata.parm:
             newdir = ("%s/%s" % (rootdir, urldata.parm.get('subdir')))
-            bb.mkdirhier(newdir)
+            bb.utils.mkdirhier(newdir)
             os.chdir(newdir)
 
         cmd = "PATH=\"%s\" %s" % (bb.data.getVar('PATH', data, True), cmd)