iommu/amd: Make amd_iommu_is_attach_deferred() static

amd_iommu_is_attach_deferred() is a callback function called by
iommu_ops. Make it as static.

No functional changes intended.
Signed-off-by: Vasant Hegde <vasant.hegde@amd.com>
Reviewed-by: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
Link: https://lore.kernel.org/r/20240828111029.5429-3-vasant.hegde@amd.comSigned-off-by: Joerg Roedel <jroedel@suse.de>

drivers/iommu/amd/amd_iommu.h

@@ -180,7 +180,6 @@ static inline struct protection_domain *to_pdomain(struct iommu_domain *dom)
 }
 
 bool translation_pre_enabled(struct amd_iommu *iommu);
-bool amd_iommu_is_attach_deferred(struct device *dev);
 int __init add_special_device(u8 type, u8 id, u32 *devid, bool cmd_line);
 
 #ifdef CONFIG_DMI

drivers/iommu/amd/iommu.c

@@ -2782,7 +2782,7 @@ static void amd_iommu_get_resv_regions(struct device *dev,
 	list_add_tail(&region->list, head);
 }
 
-bool amd_iommu_is_attach_deferred(struct device *dev)
+static bool amd_iommu_is_attach_deferred(struct device *dev)
 {
 	struct iommu_dev_data *dev_data = dev_iommu_priv_get(dev);