x86/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>

diff --cc arch/x86/kernel/apic/io_apic.c
Simple merge

diff --cc arch/x86/kernel/apic/vector.c
Simple merge

diff --cc arch/x86/kernel/irq.c
Simple merge

diff --cc drivers/xen/events/events_base.c
Simple merge