MIPS: irq: Use access helper irq_data_get_affinity_mask()

This is a preparatory patch for moving irq_data struct members.

Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-mips@linux-mips.org
Cc: LKML <linux-kernel@vger.kernel.org>
Patchwork: https://patchwork.linux-mips.org/patch/10699/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

diff --cc arch/mips/bcm63xx/irq.c
Simple merge

diff --cc arch/mips/cavium-octeon/octeon-irq.c
Simple merge

diff --cc arch/mips/pmcs-msp71xx/msp_irq_cic.c
Simple merge