drivers/net: normalize TX_TIMEOUT

Some network drivers use old TX_TIMEOUT definitions, assuming HZ=100 of
old kernels.

Convert these definitions to include HZ, since HZ can be 1000 these
days.

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/eepro.c b/drivers/net/eepro.c
index 7c82631..9e19fbc 100644
--- a/drivers/net/eepro.c
+++ b/drivers/net/eepro.c
@@ -302,7 +302,7 @@
 #define ee_id_eepro10p0 0x10   /* ID for eepro/10+ */
 #define ee_id_eepro10p1 0x31
 
-#define TX_TIMEOUT 40
+#define TX_TIMEOUT ((4*HZ)/10)
 
 /* Index to functions, as function prototypes. */