fixed_phy: pass 'irq' to fixed_phy_add()

commit bd1a05ee upstream.

I've noticed  that fixed_phy_register() ignores its 'irq' parameter instead of
passing it to fixed_phy_add(). Luckily, fixed_phy_register()  seems to  always
be  called with PHY_POLL  for 'irq'... :-)

Fixes: a7595121 ("net: phy: extend fixed driver with fixed_phy_register()")
Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
[ luis: backported to 3.16:
  - fixed_phy_add() only has 3 parameters in 3.16 kernel ]
Signed-off-by: Luis Henriques <luis.henriques@canonical.com>

drivers/net/phy/fixed.c

@@ -240,7 +240,7 @@ int fixed_phy_register(unsigned int irq,
 	phy_addr = phy_fixed_addr++;
 	spin_unlock(&phy_fixed_addr_lock);
 
-	ret = fixed_phy_add(PHY_POLL, phy_addr, status);
+	ret = fixed_phy_add(irq, phy_addr, status);
 	if (ret < 0)
 		return ret;