X25: Move interrupt flag to bitfield

Moves the x25 interrupt flag from char into bitfield.

Signed-off-by: Andrew Hendry <andrew.hendry@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/x25/x25_in.c b/net/x25/x25_in.c
index 372ac22..6317896 100644
--- a/net/x25/x25_in.c
+++ b/net/x25/x25_in.c
@@ -273,7 +273,7 @@
 			break;
 
 		case X25_INTERRUPT_CONFIRMATION:
-			x25->intflag = 0;
+			clear_bit(X25_INTERRUPT_FLAG, &x25->flags);
 			break;
 
 		case X25_INTERRUPT: