pie: use u8 instead of bool in pie_vars

Linux best practice recommends using u8 for true/false values in
structures.
Signed-off-by: Mohit P. Tahiliani <tahiliani@nitk.edu.in>
Signed-off-by: Leslie Monis <lesliemonis@gmail.com>
Signed-off-by: Gautam Ramakrishnan <gautamramk@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

include/net/pie.h

@@ -21,8 +21,8 @@ struct pie_params {
 	u32 limit;		/* number of packets that can be enqueued */
 	u32 alpha;		/* alpha and beta are between 0 and 32 */
 	u32 beta;		/* and are used for shift relative to 1 */
-	bool ecn;		/* true if ecn is enabled */
-	bool bytemode;		/* to scale drop early prob based on pkt size */
+	u8 ecn;			/* true if ecn is enabled */
+	u8 bytemode;		/* to scale drop early prob based on pkt size */
 	u8 dq_rate_estimator;	/* to calculate delay using Little's law */
 };