Re: [PATCH net-next v2 8/8] ravb: Add tx_drop_cntrs to struct ravb_hw_info

The register for retrieving TX drop counters is present only on R-Car Gen3
and RZ/G2L; it is not present on R-Car Gen2.

Add the tx_drop_cntrs hw feature bit to struct ravb_hw_info, to enable this
feature specifically for R-Car Gen3 now and later extend it to RZ/G2L.

Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
Reviewed-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
---
v2:
 * Incorporated Andrew and Sergei's review comments for making it smaller patch
   and provided detailed description.
---
 drivers/net/ethernet/renesas/ravb.h      | 1 +
 drivers/net/ethernet/renesas/ravb_main.c | 4 +++-
 2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/renesas/ravb.h b/drivers/net/ethernet/renesas/ravb.h
index 0d640dbe1eed..35fbb9f60ba8 100644
--- a/drivers/net/ethernet/renesas/ravb.h
+++ b/drivers/net/ethernet/renesas/ravb.h

@@ -1001,6 +1001,7 @@ struct ravb_hw_info {
 
 	/* hardware features */
 	unsigned internal_delay:1;	/* RAVB has internal delays */
+	unsigned tx_drop_cntrs:1;	/* RAVB has TX error counters */