sfc: Use explicit bool for boolean variables, parameters and return values

Replace (cond ? 1 : 0) with cond or !!cond as appropriate, and
(cond ? 0 : 1) with !cond.

Remove some redundant boolean temporaries.

Rename one field that looks like a flag but isn't.

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
diff --git a/drivers/net/sfc/xfp_phy.c b/drivers/net/sfc/xfp_phy.c
index f3684ad..fd4045b 100644
--- a/drivers/net/sfc/xfp_phy.c
+++ b/drivers/net/sfc/xfp_phy.c
@@ -40,7 +40,7 @@
 }
 
 struct xfp_phy_data {
-	int tx_disabled;
+	bool tx_disabled;
 };
 
 #define XFP_MAX_RESET_TIME 500
@@ -151,7 +151,7 @@
 static void xfp_phy_fini(struct efx_nic *efx)
 {
 	/* Clobber the LED if it was blinking */
-	efx->board_info.blink(efx, 0);
+	efx->board_info.blink(efx, false);
 
 	/* Free the context block */
 	kfree(efx->phy_data);