sfc: Rename 'xfp' file and functions to reflect reality

The 'XFP' driver is really a driver for the QT2022C2 and QT2025C PHYs,
covering both more and less than XFP.  Rename its functions and
constants to reflect reality and to reduce namespace pollution when
sfc is a built-in driver.

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/sfc/phy.h b/drivers/net/sfc/phy.h
index c1cff9c..b5150f3 100644
--- a/drivers/net/sfc/phy.h
+++ b/drivers/net/sfc/phy.h
@@ -23,9 +23,9 @@
 extern int sft9001_wait_boot(struct efx_nic *efx);
 
 /****************************************************************************
- * AMCC/Quake QT20xx PHYs
+ * AMCC/Quake QT202x PHYs
  */
-extern struct efx_phy_operations falcon_xfp_phy_ops;
+extern struct efx_phy_operations falcon_qt202x_phy_ops;
 
 /* These PHYs provide various H/W control states for LEDs */
 #define QUAKE_LED_LINK_INVAL	(0)
@@ -39,6 +39,6 @@
 #define QUAKE_LED_TXLINK	(0)
 #define QUAKE_LED_RXLINK	(8)
 
-extern void xfp_set_led(struct efx_nic *p, int led, int state);
+extern void falcon_qt202x_set_led(struct efx_nic *p, int led, int state);
 
 #endif