[PATCH] ppc64: Fix g5-only build

The iommu_free_table() patch broke g5 only build by adding back some
incestuous relationship between generic code and pSeries code. 

This wraps this in #ifdef as a quick fix until the original author of
the patch comes up with a better solution.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

arch/ppc64/kernel/prom.c

@@ -1818,8 +1818,13 @@ int of_remove_node(struct device_node *np)
 		return -EBUSY;
 	}
 
+	/* XXX This is a layering violation, should be moved to the caller
+	 * --BenH.
+	 */
+#ifdef CONFIG_PPC_PSERIES
 	if (np->iommu_table)
 		iommu_free_table(np);
+#endif /* CONFIG_PPC_PSERIES */
 
 	write_lock(&devtree_lock);
 	OF_MARK_STALE(np);

include/asm-ppc64/iommu.h

@@ -111,9 +111,17 @@ extern void iommu_setup_pSeries(void);
 extern void iommu_setup_u3(void);
 
 /* Creates table for an individual device node */
+/* XXX: This isn't generic, please name it accordingly or add
+ * some ppc_md. hooks for iommu implementations to do what they
+ * need to do. --BenH.
+ */
 extern void iommu_devnode_init(struct device_node *dn);
 
 /* Frees table for an individual device node */
+/* XXX: This isn't generic, please name it accordingly or add
+ * some ppc_md. hooks for iommu implementations to do what they
+ * need to do. --BenH.
+ */
 extern void iommu_free_table(struct device_node *dn);
 
 #endif /* CONFIG_PPC_MULTIPLATFORM */