release-notes: Don't try to clone witherspoon-foo-xml

The proliferation of witherspoon flavours has confused the release-notes
script again, causing it to attempt to clone the nonexistent
witherspoon-{redbud,sequoia}-xml repo.

Handle these extra variants to make sure we only clone the actual
witherspoon-xml repository.

Signed-off-by: Samuel Mendoza-Jonas <sam@mendozajonas.com>
diff --git a/openpower/scripts/release-notes b/openpower/scripts/release-notes
index 138c28e..50b659f 100755
--- a/openpower/scripts/release-notes
+++ b/openpower/scripts/release-notes
@@ -124,6 +124,12 @@
     next if $p =~ /^zz$/;
     next if $p =~ /mambo/;
     next if $p =~ /redbud/;
+    next if $p =~ /pseries/;
+    next if $p =~ /witherspoon-redbud/;
+    if ($p =~ /witherspoon-sequoia/) {
+	    $p = "witherspoon";
+	    $witherspoon_insanity = 1;
+    }
     $repos->{"$p-xml"} = { REPO => "http://github.com/open-power/$p-xml" ,
 			   DIR => "openpower/package/$p-xml" };
 }
@@ -148,8 +154,11 @@
 
 if ($witherspoon_insanity) {
     $dbh->do("ALTER TABLE 'end_witherspoon-sequoia_manifest' RENAME to end_witherspoon_manifest");
+    $dbh->do("ALTER TABLE 'begin_witherspoon-sequoia_manifest' RENAME to begin_witherspoon_manifest");
     @end_platforms = grep { $_ != 'witherspoon-sequoia' } @end_platforms;
+    @begin_platforms = grep { $_ != 'witherspoon-sequoia' } @begin_platforms;
     push @end_platforms, 'witherspoon';
+    push @begin_platforms, 'witherspoon';
     push @common_platforms, 'witherspoon';
 }