intel-iommu: move iommu_prepare_gfx_mapping() out of dma_remapping.h

Signed-off-by: Mark McLoughlin <markmc@redhat.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>

drivers/pci/intel-iommu.c

@@ -1686,6 +1686,11 @@ static void __init iommu_prepare_gfx_mapping(void)
 			printk(KERN_ERR "IOMMU: mapping reserved region failed\n");
 	}
 }
+#else /* !CONFIG_DMAR_GFX_WA */
+static inline void iommu_prepare_gfx_mapping(void)
+{
+	return;
+}
 #endif
 
 #ifdef CONFIG_DMAR_FLOPPY_WA

include/linux/dma_remapping.h

@@ -20,11 +20,4 @@ extern void free_dmar_iommu(struct intel_iommu *iommu);
 
 extern int dmar_disabled;
 
-#ifndef CONFIG_DMAR_GFX_WA
-static inline void iommu_prepare_gfx_mapping(void)
-{
-	return;
-}
-#endif /* !CONFIG_DMAR_GFX_WA */
-
 #endif