bnx2x: Fix XMAC loopback test

Change XMAC loopback type from CORE LOCAL to LINE LOCAL for the BCM578xx due to intermittent problem with the loopback with this configuration.
Signed-off-by: Yaniv Rosner <yanivr@broadcom.com>
Signed-off-by: Eilon Greenstein <eilong@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/bnx2x/bnx2x_link.c

@@ -1720,7 +1720,7 @@ static int bnx2x_xmac_enable(struct link_params *params,
 
 	/* Check loopback mode */
 	if (lb)
-		val |= XMAC_CTRL_REG_CORE_LOCAL_LPBK;
+		val |= XMAC_CTRL_REG_LINE_LOCAL_LPBK;
 	REG_WR(bp, xmac_base + XMAC_REG_CTRL, val);
 	bnx2x_set_xumac_nig(params,
 			    ((vars->flow_ctrl & BNX2X_FLOW_CTRL_TX) != 0), 1);

drivers/net/bnx2x/bnx2x_reg.h

@@ -5320,7 +5320,7 @@
 #define XCM_REG_XX_OVFL_EVNT_ID 				 0x20058
 #define XMAC_CLEAR_RX_LSS_STATUS_REG_CLEAR_LOCAL_FAULT_STATUS	 (0x1<<0)
 #define XMAC_CLEAR_RX_LSS_STATUS_REG_CLEAR_REMOTE_FAULT_STATUS	 (0x1<<1)
-#define XMAC_CTRL_REG_CORE_LOCAL_LPBK				 (0x1<<3)
+#define XMAC_CTRL_REG_LINE_LOCAL_LPBK				 (0x1<<2)
 #define XMAC_CTRL_REG_RX_EN					 (0x1<<1)
 #define XMAC_CTRL_REG_SOFT_RESET				 (0x1<<6)
 #define XMAC_CTRL_REG_TX_EN					 (0x1<<0)