Merge remote-tracking branch 'jliu/or32' into staging

Merge remote-tracking branch 'jliu/or32' into staging

# By Sebastian Macke
# Via Jia Liu
* jliu/or32:
  target-openrisc: Correct carry flag check of l.addc and l.addic test cases
  target-openrisc: Correct memory bounds checking for the tlb buffers
  openrisc-timer: Reduce overhead, Separate clock update functions
  target-openrisc: Correct wrong epcr register in interrupt handler
  target-openrisc: Remove executable flag for every page
  target-openrisc: Remove unnecessary code generated by jump instructions
  target-openrisc: Speed up move instruction

Message-id: 1384958318-9145-1-git-send-email-proljc@gmail.com
Signed-off-by: Anthony Liguori <aliguori@amazon.com>