lib/oe/patch.py: Cosmetic change to avoid bitbake warning

bb.mkdirhier should be bb.utils.mkdirhier

(From OE-Core rev: cd28d5f5ad7855d0d6a15bec5317c942e2462065)

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

meta/lib/oe/patch.py

@@ -358,7 +358,7 @@ class UserResolver(Resolver):
             t = bb.data.getVar('T', self.patchset.d, 1)
             if not t:
                 bb.msg.fatal(bb.msg.domain.Build, "T not set")
-            bb.mkdirhier(t)
+            bb.utils.mkdirhier(t)
             import random
             rcfile = "%s/bashrc.%s.%s" % (t, str(os.getpid()), random.random())
             f = open(rcfile, "w")