x86, sparseirq: clean up Kconfig entry

	bool "Support sparse irq numbering"

	depends on PCI_MSI || HT_IRQ

	help

	  This enables support for sparse irq, esp for msi/msi-x. You may need

	  if you have lots of cards supports msi-x installed.

	  This enables support for sparse irqs. This is useful for distro

	  kernels that want to define a high CONFIG_NR_CPUS value but still

	  want to have low kernel memory footprint on smaller machines.

	  If you don't know what to do here, say Y.

	  ( Sparse IRQs can also be beneficial on NUMA boxes, as they spread

	    out the irq_desc[] array in a more NUMA-friendly way. )

	  If you don't know what to do here, say N.

config NUMA_MIGRATE_IRQ_DESC

	bool "Move irq desc when changing irq smp_affinity"