net: wireless: bcm4329: Fix 2.6.39 compilation

Signed-off-by: Dmitry Shmidt <dimitrysh@google.com>
diff --git a/drivers/net/wireless/bcm4329/dhd.h b/drivers/net/wireless/bcm4329/dhd.h
index 573f425..9aeca7e 100644
--- a/drivers/net/wireless/bcm4329/dhd.h
+++ b/drivers/net/wireless/bcm4329/dhd.h
@@ -44,6 +44,7 @@
 #include <linux/random.h>
 #include <linux/spinlock.h>
 #include <linux/ethtool.h>
+#include <linux/sched.h>
 #include <asm/uaccess.h>
 #include <asm/unaligned.h>