The Versatile starts to register Linux IRQ numbers from offset 0
which is illegal, since this is NO_IRQ. Bump all hard-coded IRQs
by 32 to get rid of the problem.

Cc: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>