eth: gfar: remove a copy of the NAPI_POLL_WEIGHT define

Defining local versions of NAPI_POLL_WEIGHT with the same
values in the drivers just makes refactoring harder.

Signed-off-by: Jakub Kicinski <[e-mail]>
Signed-off-by: David S. Miller <[e-mail]>

drivers/net/ethernet/freescale/gianfar.c

···
 	/* Register for napi ...We are registering NAPI for each grp */
 	for (i = 0; i < priv->num_grps; i++) {
 		netif_napi_add(dev, &priv->gfargrp[i].napi_rx,
-			       gfar_poll_rx_sq, GFAR_DEV_WEIGHT);
+			       gfar_poll_rx_sq, NAPI_POLL_WEIGHT);
 		netif_tx_napi_add(dev, &priv->gfargrp[i].napi_tx,
 				  gfar_poll_tx_sq, 2);
 	}

drivers/net/ethernet/freescale/gianfar.h

···
 	unsigned int count;
 };
 
-/* The maximum number of packets to be handled in one call of gfar_poll */
-#define GFAR_DEV_WEIGHT 64
-
 /* Length for FCB */
 #define GMAC_FCB_LEN 8