ARM: 7034/1: mach-u300: delete irq_to_gpio() function

This function is not used in the U300 build, and on the whole the
call is hard to consolidate so get rid of it from this machine.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
1 file changed