octeontx2-af: CN10KB: Add USGMII LMAC mode

Upon physical link change, firmware reports to the kernel about the
change along with the details like speed, lmac_type_id, etc.
Kernel derives lmac_type based on lmac_type_id received from firmware.

This patch extends current lmac list with new USGMII mode supported
by CN10KB RPM block.
Signed-off-by: Hariprasad Kelam <hkelam@marvell.com>
Signed-off-by: Sunil Kovvuri Goutham <sgoutham@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/marvell/octeontx2/af/cgx.c

@@ -55,6 +55,7 @@ static const char *cgx_lmactype_string[LMAC_MODE_MAX] = {
 	[LMAC_MODE_50G_R] = "50G_R",
 	[LMAC_MODE_100G_R] = "100G_R",
 	[LMAC_MODE_USXGMII] = "USXGMII",
+	[LMAC_MODE_USGMII] = "USGMII",
 };
 
 /* CGX PHY management internal APIs */

drivers/net/ethernet/marvell/octeontx2/af/cgx.h

@@ -110,6 +110,7 @@ enum LMAC_TYPE {
 	LMAC_MODE_50G_R		= 8,
 	LMAC_MODE_100G_R	= 9,
 	LMAC_MODE_USXGMII	= 10,
+	LMAC_MODE_USGMII	= 11,
 	LMAC_MODE_MAX,
 };