net: mscc: ocelot: redefine PTP pins

There are 5 PTP_PINS register groups on Ocelot switch.
Except the one used for TOD operations, there are still
4 register groups for programmable pins. So redefine the
4 programmable pins.
Signed-off-by: NYangbo Lu <yangbo.lu@nxp.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

include/soc/mscc/ocelot.h

@@ -440,10 +440,11 @@ enum ocelot_regfield {
 	REGFIELD_MAX
 };
 
-enum ocelot_clk_pins {
-	ALT_PPS_PIN	= 1,
-	EXT_CLK_PIN,
-	ALT_LDST_PIN,
+enum ocelot_ptp_pins {
+	PTP_PIN_0,
+	PTP_PIN_1,
+	PTP_PIN_2,
+	PTP_PIN_3,
 	TOD_ACC_PIN
 };