net: replace the "xfi" phy-mode with "10gbase-r"

As part of the effort of making U-Boot work with the same device tree as
Linux, there is an issue with the "xfi" phy-mode. To be precise, in
Linux there was a discussion (for those who have time to read:
https://lore.kernel.org/netdev/1576768881-24971-2-git-send-email-madalin.bucur@oss.nxp.com/)

which led to a patch:
https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next.git/commit/?id=c114574ebfdf42f826776f717c8056a00fa94881

TL;DR: "xfi" was standardized in Linux as "10gbase-r".

This patch changes the relevant occurrences in U-Boot to use "10gbase-r"
instead of "xfi" wherever applicable.

Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Ramon Fried <rfried.dev@gmail.com>
diff --git a/board/freescale/t208xqds/eth_t208xqds.c b/board/freescale/t208xqds/eth_t208xqds.c
index 705387a..2d7fc8b 100644
--- a/board/freescale/t208xqds/eth_t208xqds.c
+++ b/board/freescale/t208xqds/eth_t208xqds.c
@@ -310,16 +310,16 @@
 
 	} else if (fm_info_get_enet_if(port) == PHY_INTERFACE_MODE_XGMII) {
 		switch (srds_s1) {
-		case 0x66: /* XFI interface */
+		case 0x66: /* 10GBase-R interface */
 		case 0x6b:
 		case 0x6c:
 		case 0x6d:
 		case 0x71:
 			/*
-			* if the 10G is XFI, check hwconfig to see what is the
-			* media type, there are two types, fiber or copper,
-			* fix the dtb accordingly.
-			*/
+			 * Check hwconfig to see what is the media type, there
+			 * are two types, fiber or copper, fix the dtb
+			 * accordingly.
+			 */
 			switch (port) {
 			case FM1_10GEC1:
 			if (hwconfig_sub("fsl_10gkr_copper", "fm1_10g1")) {
@@ -378,7 +378,7 @@
 					printf("Interface %d in backplane KR mode\n",
 					       port);
 				} else {
-					/* fixed-link for XFI fiber cable */
+					/* fixed-link for 10GBase-R fiber cable */
 					f_link.phy_id = port;
 					f_link.duplex = 1;
 					f_link.link_speed = 10000;
@@ -538,12 +538,12 @@
 	case 0x66:
 	case 0x67:
 		/*
-		 * XFI does not need a PHY to work, but to avoid U-Boot use
-		 * default PHY address which is zero to a MAC when it found
-		 * a MAC has no PHY address, we give a PHY address to XFI
+		 * 10GBase-R does not need a PHY to work, but to avoid U-Boot
+		 * use default PHY address which is zero to a MAC when it found
+		 * a MAC has no PHY address, we give a PHY address to 10GBase-R
 		 * MAC, and should not use a real XAUI PHY address, since
 		 * MDIO can access it successfully, and then MDIO thinks
-		 * the XAUI card is used for the XFI MAC, which will cause
+		 * the XAUI card is used for the 10GBase-R MAC, which will cause
 		 * error.
 		 */
 		fm_info_set_phy_address(FM1_10GEC1, 4);
@@ -701,7 +701,7 @@
 			    (srds_s1 == 0x6a) || (srds_s1 == 0x70) ||
 			    (srds_s1 == 0x6c) || (srds_s1 == 0x6d) ||
 			    (srds_s1 == 0x71)) {
-				/* As XFI is in cage intead of a slot, so
+				/* As 10GBase-R is in cage intead of a slot, so
 				 * ensure doesn't disable the corresponding port
 				 */
 				break;