imx5: not include the unused head file

Remove the useless <asm/irq.h> and <linux/irq.h> reference

Signed-off-by: Jason Liu <jason.hui@linaro.org>
Cc: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
7 files changed