irq_remapping/vt-d: Move struct irq_2_iommu into intel_irq_remapping.c

Now only intel_irq_remapping.c access irq_2_iommu, so move it from
hw_irq.h into intel_irq_remapping.c.
Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com>
Tested-by: Joerg Roedel <jroedel@suse.de>
Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Cc: David Cohen <david.a.cohen@linux.intel.com>
Cc: Sander Eikelenboom <linux@eikelenboom.it>
Cc: David Vrabel <david.vrabel@citrix.com>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: iommu@lists.linux-foundation.org
Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Rafael J. Wysocki <rjw@rjwysocki.net>
Cc: Randy Dunlap <rdunlap@infradead.org>
Cc: Yinghai Lu <yinghai@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Dimitri Sivanich <sivanich@sgi.com>
Cc: Joerg Roedel <joro@8bytes.org>
Link: http://lkml.kernel.org/r/1428978610-28986-15-git-send-email-jiang.liu@linux.intel.comSigned-off-by: Thomas Gleixner <tglx@linutronix.de>

arch/x86/include/asm/hw_irq.h

@@ -95,14 +95,6 @@ extern void trace_call_function_single_interrupt(void);
 #endif /* CONFIG_TRACING */
 
 #ifdef CONFIG_IRQ_REMAP
-/* Intel specific interrupt remapping information */
-struct irq_2_iommu {
-	struct intel_iommu *iommu;
-	u16 irte_index;
-	u16 sub_handle;
-	u8  irte_mask;
-};
-
 /* AMD specific interrupt remapping information */
 struct irq_2_irte {
 	u16 devid; /* Device ID for IRTE table */
@@ -194,7 +186,6 @@ struct irq_cfg {
 	u8			move_in_progress : 1;
 #ifdef CONFIG_IRQ_REMAP
 	union {
-		struct irq_2_iommu irq_2_iommu;
 		struct irq_2_irte  irq_2_irte;
 	};
 #endif

drivers/iommu/intel_irq_remapping.c

@@ -32,6 +32,13 @@ struct hpet_scope {
 	unsigned int devfn;
 };
 
+struct irq_2_iommu {
+	struct intel_iommu *iommu;
+	u16 irte_index;
+	u16 sub_handle;
+	u8  irte_mask;
+};
+
 struct intel_ir_data {
 	struct irq_2_iommu			irq_2_iommu;
 	struct irte				irte_entry;