This contains multiple trivial cleanups to the realview headers:

- removing the file names from the introductory comment
- removing the uncompress.h header that is unused
- removing the irqs.h header and NR_IRQS logic that is
  obsoleted by sparse IRQs
Signed-off-by: NArnd Bergmann <arnd@arndb.de>
Signed-off-by: NLinus Walleij <linus.walleij@linaro.org>