Merge tag 'xtensa-next-20140721' of git://

Pull Xtensa fixes from Chris Zankel:
 - resolve FIXMEs in double exception handler for window overflow. This
   fix makes native building of linux on xtensa host possible;
 - fix sysmem region removal issue introduced in 3.15.

* tag 'xtensa-next-20140721' of git://
  xtensa: fix sysmem reservation at the end of existing block
  xtensa: add fixup for double exception raised in window overflow