x86, apic: Remove ioapic_disable_legacy()
The ioapic_disable_legacy() call is no longer needed for platforms do not have legacy pic. the legacy pic abstraction has taken care it automatically. This patch also initialize irq-related static variables based on information obtained from legacy_pic. Signed-off-by: NJacob Pan <jacob.jun.pan@intel.com> LKML-Reference: <43F901BD926A4E43B106BF17856F0755A30A7660@orsmsx508.amr.corp.intel.com> Signed-off-by: NH. Peter Anvin <hpa@zytor.com>
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