sfc: Replace efx_rx_buffer::is_page and other booleans with a flags field

Replace checksummed and discard booleans from efx_handle_rx_event()
with a bitmask, added to the flags field.

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
diff --git a/drivers/net/ethernet/sfc/efx.h b/drivers/net/ethernet/sfc/efx.h
index e0b66d1..7f546e2 100644
--- a/drivers/net/ethernet/sfc/efx.h
+++ b/drivers/net/ethernet/sfc/efx.h
@@ -40,9 +40,9 @@
 extern void efx_fast_push_rx_descriptors(struct efx_rx_queue *rx_queue);
 extern void efx_rx_slow_fill(unsigned long context);
 extern void __efx_rx_packet(struct efx_channel *channel,
-			    struct efx_rx_buffer *rx_buf, bool checksummed);
+			    struct efx_rx_buffer *rx_buf);
 extern void efx_rx_packet(struct efx_rx_queue *rx_queue, unsigned int index,
-			  unsigned int len, bool checksummed, bool discard);
+			  unsigned int len, u16 flags);
 extern void efx_schedule_slow_fill(struct efx_rx_queue *rx_queue);
 
 #define EFX_MAX_DMAQ_SIZE 4096UL