x86: remove duplicated extern force_iommu

Both iommu.h and dma-mapping.h have extern force_iommu. The latter
doesn't need to do.

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
FUJITA Tomonori 2008-09-10 00:49:47 +09:00 • committed by Ingo Molnar
commit 8a493d37f0