x86: rename iommu_num_pages function to iommu_nr_pages

x86: rename iommu_num_pages function to iommu_nr_pages

This series of patches re-introduces the iommu_num_pages function so that
it can be used by each architecture specific IOMMU implementations.  The
series also changes IOMMU implementations for X86, Alpha, PowerPC and
UltraSparc.  The other implementations are not yet changed because the
modifications required are not obvious and I can't test them on real
hardware.

This patch:

This is a preparation patch for introducing a generic iommu_num_pages function.

Signed-off-by: Joerg Roedel <[email protected]>
Cc: "David S. Miller" <[email protected]>
Cc: Richard Henderson <[email protected]>
Cc: Ivan Kokshaysky <[email protected]>
Cc: Benjamin Herrenschmidt <[email protected]>
Cc: Paul Mackerras <[email protected]>
Cc: Ingo Molnar <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Cc: FUJITA Tomonori <[email protected]>
Cc: Muli Ben-Yehuda <[email protected]>
Cc: Dave Airlie <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>