sfc: remove EFX_BUG_ON_PARANOID, use EFX_WARN_ON_[ONCE_]PARANOID instead

Logically, EFX_BUG_ON_PARANOID can never be correct.  For, BUG_ON should
 only be used if it is not possible to continue without potential harm;
 and since the non-DEBUG driver will continue regardless (as the BUG_ON is
 compiled out), clearly the BUG_ON cannot be needed in the DEBUG driver.
So, replace every EFX_BUG_ON_PARANOID with either an EFX_WARN_ON_PARANOID
 or the newly defined EFX_WARN_ON_ONCE_PARANOID.

Signed-off-by: Edward Cree <ecree@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/ethernet/sfc/efx.c b/drivers/net/ethernet/sfc/efx.c
index da7028d..5a5dcad 100644
--- a/drivers/net/ethernet/sfc/efx.c
+++ b/drivers/net/ethernet/sfc/efx.c
@@ -355,7 +355,7 @@ static int efx_probe_eventq(struct efx_channel *channel)
 	/* Build an event queue with room for one event per tx and rx buffer,
 	 * plus some extra for link state events and MCDI completions. */
 	entries = roundup_pow_of_two(efx->rxq_entries + efx->txq_entries + 128);
-	EFX_BUG_ON_PARANOID(entries > EFX_MAX_EVQ_SIZE);
+	EFX_WARN_ON_PARANOID(entries > EFX_MAX_EVQ_SIZE);
 	channel->eventq_mask = max(entries, EFX_MIN_EVQ_SIZE) - 1;
 
 	return efx_nic_probe_eventq(channel);