gve: Unify duplicate GQ min pkt desc size constants

The two constants accomplish the same thing.
Signed-off-by: Shailend Chand <shailend@google.com>
Reviewed-by: Jakub Kicinski <kuba@kernel.org>
Link: https://lore.kernel.org/r/20230407184830.309398-1-shailend@google.comSigned-off-by: Paolo Abeni <pabeni@redhat.com>

drivers/net/ethernet/google/gve/gve.h

@@ -49,8 +49,6 @@
 
 #define GVE_XDP_ACTIONS 5
 
-#define GVE_TX_MAX_HEADER_SIZE 182
-
 #define GVE_GQ_TX_MIN_PKT_DESC_BYTES 182
 
 /* Each slot in the desc ring has a 1:1 mapping to a slot in the data ring */

drivers/net/ethernet/google/gve/gve_tx.c

@@ -730,7 +730,7 @@ static int gve_tx_fill_xdp(struct gve_priv *priv, struct gve_tx_ring *tx,
 	u32 reqi = tx->req;
 
 	pad = gve_tx_fifo_pad_alloc_one_frag(&tx->tx_fifo, len);
-	if (pad >= GVE_TX_MAX_HEADER_SIZE)
+	if (pad >= GVE_GQ_TX_MIN_PKT_DESC_BYTES)
 		pad = 0;
 	info = &tx->info[reqi & tx->mask];
 	info->xdp_frame = frame_p;
@@ -810,7 +810,7 @@ int gve_xdp_xmit_one(struct gve_priv *priv, struct gve_tx_ring *tx,
 {
 	int nsegs;
 
-	if (!gve_can_tx(tx, len + GVE_TX_MAX_HEADER_SIZE - 1))
+	if (!gve_can_tx(tx, len + GVE_GQ_TX_MIN_PKT_DESC_BYTES - 1))
 		return -EBUSY;
 
 	nsegs = gve_tx_fill_xdp(priv, tx, data, len, frame_p, false);