drm/msm/dpu: set missing flush bits for INTF_2 and INTF_3

This fixes flushing of INTF_2 and INTF_3 on SM8150 and SM8250 hardware.
Signed-off-by: Jonathan Marek <jonathan@marek.ca>
Signed-off-by: Rob Clark <robdclark@chromium.org>

drivers/gpu/drm/msm/disp/dpu1/dpu_hw_ctl.c

@@ -245,30 +245,14 @@ static int dpu_hw_ctl_get_bitmask_intf(struct dpu_hw_ctl *ctx,
 static int dpu_hw_ctl_get_bitmask_intf_v1(struct dpu_hw_ctl *ctx,
 		u32 *flushbits, enum dpu_intf intf)
 {
-	switch (intf) {
-	case INTF_0:
-	case INTF_1:
 	*flushbits |= BIT(31);
-		break;
-	default:
-		return 0;
-	}
 	return 0;
 }
 
 static int dpu_hw_ctl_active_get_bitmask_intf(struct dpu_hw_ctl *ctx,
 		u32 *flushbits, enum dpu_intf intf)
 {
-	switch (intf) {
-	case INTF_0:
-		*flushbits |= BIT(0);
-		break;
-	case INTF_1:
-		*flushbits |= BIT(1);
-		break;
-	default:
-		return 0;
-	}
+	*flushbits |= BIT(intf - INTF_0);
 	return 0;
 }