wlcore: increase aggregation buffer size by one page

With 4 pages (16Kb), we can't fit 10 frames in the aggregation buffer
during iperf.  This is the optimal for the firmware.  Thus, increase
the buffer size by one page.
Signed-off-by: Luciano Coelho <coelho@ti.com>
Signed-off-by: Arik Nemtsov <arik@wizery.com>

drivers/net/wireless/ti/wlcore/wlcore_i.h

@@ -89,7 +89,7 @@
 #define WL1271_AP_BSS_INDEX        0
 #define WL1271_AP_DEF_BEACON_EXP   20
 
-#define WL1271_AGGR_BUFFER_SIZE (4 * PAGE_SIZE)
+#define WL1271_AGGR_BUFFER_SIZE (5 * PAGE_SIZE)
 
 enum wl1271_state {
 	WL1271_STATE_OFF,