iommu: rename intr_remapping.[ch] to irq_remapping.[ch]

Make the file names consistent with the naming conventions of irq subsystem.

Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Cc: Joerg Roedel <joerg.roedel@amd.com>
Cc: Yinghai Lu <yinghai@kernel.org>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: Alex Williamson <alex.williamson@redhat.com>
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>

drivers/iommu/dmar.c

@@ -36,7 +36,7 @@
 #include <linux/tboot.h>
 #include <linux/dmi.h>
 #include <linux/slab.h>
-#include <asm/intr_remapping.h>
+#include <asm/irq_remapping.h>
 #include <asm/iommu_table.h>
 
 #define PREFIX "DMAR: "