iommu/vt-d: mark internal functions as static

Functions alloc_iommu() and parse_ioapics_under_ir()
are only used internally, so mark them as static.

[Joerg: Made detect_intel_iommu() non-static again for IA64]

Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com>
Signed-off-by: Joerg Roedel <joro@8bytes.org>
diff --git a/include/linux/dmar.h b/include/linux/dmar.h
index 205ee37..1a60dd6 100644
--- a/include/linux/dmar.h
+++ b/include/linux/dmar.h
@@ -33,6 +33,7 @@
 #define DMAR_X2APIC_OPT_OUT	0x2
 
 struct intel_iommu;
+
 #ifdef CONFIG_DMAR_TABLE
 extern struct acpi_table_header *dmar_tbl;
 struct dmar_drhd_unit {
@@ -69,9 +70,6 @@
 /* Intel IOMMU detection */
 extern int detect_intel_iommu(void);
 extern int enable_drhd_fault_handling(void);
-
-extern int parse_ioapics_under_ir(void);
-extern int alloc_iommu(struct dmar_drhd_unit *);
 #else
 static inline int detect_intel_iommu(void)
 {