IOMMU-API: use ANSI style function declaration for 'iommu_found'

Fix this sparse warning:
  drivers/base/iommu.c:34:18: warning: non-ANSI function declaration of function 'iommu_found'

Signed-off-by: Hannes Eder <hannes@hanneseder.net>
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
1 file changed