x86/acpi: Reduce code duplication in mp_override_legacy_irq()

x86/acpi: Reduce code duplication in mp_override_legacy_irq()

The new function mp_register_ioapic_irq() is a subset of the code in
mp_override_legacy_irq().

Replace the code duplication by invoking mp_register_ioapic_irq() from
mp_override_legacy_irq().

Signed-off-by: Vikas C Sajjan <[email protected]>
Signed-off-by: Thomas Gleixner <[email protected]>
Reviewed-by: Thomas Gleixner <[email protected]>
Acked-by: Rafael J. Wysocki <[email protected]>
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Link: https://lkml.kernel.org/r/[email protected]