EFI changes for v3.9-rc1,

 * Improve the initrd handling in the EFI boot stub by allowing
   forward slashes in the pathname - from Chun-Yi Lee.

 * Cleanup code duplication in the EFI mixed kernel/firmware code -
   from Satoru Takeuchi.

 * efivarfs bug fixes for more strict filename validation, with lots
   of input from Al Viro.
This tag has no release notes.