ath6kl: fix size_t printf warnings

My new tracing code for ath6kl introduced these warnings on 64-bit:

trace.h:38:1: warning: format '%d' expects argument of type 'int',
but argument 4 has type 'size_t' [-Wformat]
trace.h:61:1: warning: format '%d' expects argument of type 'int',
but argument 4 has type 'size_t' [-Wformat]
trace.h:84:1: warning: format '%d' expects argument of type 'int',
but argument 6 has type 'size_t' [-Wformat]
trace.h:119:1: warning: format '%d' expects argument of type 'int',
but argument 7 has type 'size_t' [-Wformat]
trace.h:173:1: warning: format '%d' expects argument of type 'int',
but argument 3 has type 'size_t' [-Wformat]
trace.h:193:1: warning: format '%d' expects argument of type 'int',
but argument 5 has type 'size_t' [-Wformat]
trace.h:221:1: warning: format '%d' expects argument of type 'int',
but argument 5 has type 'size_t' [-Wformat]

Fix them by using %zd.

Reported-by: John W. Linville <[e-mail]>
Signed-off-by: Kalle Valo <[e-mail]>
Signed-off-by: John W. Linville <[e-mail]>

drivers/net/wireless/ath/ath6kl/trace.h

···
 	),
 
 	TP_printk(
-		"id %d len %d",
+		"id %d len %zd",
 		__entry->id, __entry->buf_len
 	)
 );
···
 	),
 
 	TP_printk(
-		"id %d len %d",
+		"id %d len %zd",
 		__entry->id, __entry->buf_len
 	)
 );
···
 	),
 
 	TP_printk(
-		"%s addr 0x%x flags 0x%x len %d\n",
+		"%s addr 0x%x flags 0x%x len %zd\n",
 		__entry->tx ? "tx" : "rx",
 		__entry->addr,
 		__entry->flags,
···
 	),
 
 	TP_printk(
-		"%s addr 0x%x flags 0x%x entries %d total_len %d\n",
+		"%s addr 0x%x flags 0x%x entries %d total_len %zd\n",
 		__entry->tx ? "tx" : "rx",
 		__entry->addr,
 		__entry->flags,
···
 	),
 
 	TP_printk(
-		"irq len %d\n", __entry->buf_len
+		"irq len %zd\n", __entry->buf_len
 	)
 );
 
···
 	),
 
 	TP_printk(
-		"status %d endpoint %d len %d\n",
+		"status %d endpoint %d len %zd\n",
 		__entry->status,
 		__entry->endpoint,
 		__entry->buf_len
···
 	),
 
 	TP_printk(
-		"status %d endpoint %d len %d\n",
+		"status %d endpoint %d len %zd\n",
 		__entry->status,
 		__entry->endpoint,
 		__entry->buf_len