iommu/tegra241-cmdqv: Use request_threaded_irq

iommu/tegra241-cmdqv: Use request_threaded_irq

A vEVENT can be reported only from a threaded IRQ context. Change to using
request_threaded_irq to support that.

Link: https://patch.msgid.link/r/f160193980e3b273afbd1d9cfc3e360084c05ba6.1752126748.git.nicolinc@nvidia.com
Acked-by: Pranjal Shrivastava <praan@google.com>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Signed-off-by: Nicolin Chen <nicolinc@nvidia.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>