V4L/DVB (6064): cx88: Add symbolic names for the PCI interrupt bits

Used for the PCI_INTMSK and PCI_INT_STAT registers.

Signed-off-by: Trent Piepho <xyzzy@speakeasy.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
diff --git a/drivers/media/video/cx88/cx88-input.c b/drivers/media/video/cx88/cx88-input.c
index 120f568..c78a95e 100644
--- a/drivers/media/video/cx88/cx88-input.c
+++ b/drivers/media/video/cx88/cx88-input.c
@@ -167,7 +167,7 @@
 		schedule_work(&ir->work);
 	}
 	if (ir->sampling) {
-		core->pci_irqmask |= (1 << 18);	/* IR_SMP_INT */
+		core->pci_irqmask |= PCI_INT_IR_SMPINT;
 		cx_write(MO_DDS_IO, 0xa80a80);	/* 4 kHz sample rate */
 		cx_write(MO_DDSCFG_IO, 0x5);	/* enable */
 	}
@@ -177,7 +177,7 @@
 {
 	if (ir->sampling) {
 		cx_write(MO_DDSCFG_IO, 0x0);
-		core->pci_irqmask &= ~(1 << 18);
+		core->pci_irqmask &= ~PCI_INT_IR_SMPINT;
 	}
 
 	if (ir->polling) {