buildhistory: Sync with bitbake changes

Adjust to the recent changes in the git fetcher. This code should work
with current and previous versions of bitbake and can be cleaned up when
we move to new bitbake versions.

(From OE-Core rev: 835b64d4e9ed7b627b56a75d529f1a403c5db1a8)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/classes/buildhistory.bbclass

@@ -554,7 +554,10 @@ def _get_srcrev_values(d):
         ud = urldata[scm]
         for name in ud.names:
             rev = ud.method.sortable_revision(scm, ud, d, name)
-            if rev.startswith(autoinc_templ):
+            # Clean this up when we next bump bitbake version
+            if type(rev) != str:
+                autoinc, rev = rev
+            elif rev.startswith(autoinc_templ):
                 rev = rev[len(autoinc_templ):]
             dict_srcrevs[name] = rev
             if 'tag' in ud.parm: