vfio: Rename vfio_ioctl_check_extension()

To vfio_container_ioctl_check_extension().

A following patch will turn this into a non-static function, make it clear
it is related to the container.
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Link: https://lore.kernel.org/r/6-v3-297af71838d2+b9-vfio_container_split_jgg@nvidia.comSigned-off-by: Alex Williamson <alex.williamson@redhat.com>

drivers/vfio/vfio_main.c

@@ -813,8 +813,9 @@ EXPORT_SYMBOL_GPL(vfio_unregister_group_dev);
 /*
  * VFIO base fd, /dev/vfio/vfio
  */
-static long vfio_ioctl_check_extension(struct vfio_container *container,
-				       unsigned long arg)
+static long
+vfio_container_ioctl_check_extension(struct vfio_container *container,
+				     unsigned long arg)
 {
 	struct vfio_iommu_driver *driver;
 	long ret = 0;
@@ -971,7 +972,7 @@ static long vfio_fops_unl_ioctl(struct file *filep,
 		ret = VFIO_API_VERSION;
 		break;
 	case VFIO_CHECK_EXTENSION:
-		ret = vfio_ioctl_check_extension(container, arg);
+		ret = vfio_container_ioctl_check_extension(container, arg);
 		break;
 	case VFIO_SET_IOMMU:
 		ret = vfio_ioctl_set_iommu(container, arg);
@@ -2100,8 +2101,8 @@ bool vfio_file_enforced_coherent(struct file *file)
 
 	down_read(&group->group_rwsem);
 	if (group->container) {
-		ret = vfio_ioctl_check_extension(group->container,
-						 VFIO_DMA_CC_IOMMU);
+		ret = vfio_container_ioctl_check_extension(group->container,
+							   VFIO_DMA_CC_IOMMU);
 	} else {
 		/*
 		 * Since the coherency state is determined only once a container