phy/micrel: Fix ID of KSZ9021

Right ID of KSZ9021 is 0x00221610.
Because lower 4bit is a revision number, it varies according to a chip.

Signed-off-by: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>
Cc: David J. Choi <david.choi@micrel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

include/linux/micrel_phy.h

@@ -3,7 +3,7 @@
 
 #define MICREL_PHY_ID_MASK	0x00fffff0
 
-#define PHY_ID_KSZ9021		0x00221611
+#define PHY_ID_KSZ9021		0x00221610
 #define PHY_ID_KS8737		0x00221720
 #define PHY_ID_KS8041		0x00221510
 #define PHY_ID_KS8051		0x00221550