configs: librem5: add a netconsole to u-boot

Signed-off-by: Angus Ainslie (Purism) <angus@akkea.ca>

include/configs/librem5.h

@@ -101,6 +101,13 @@
 #define CONFIG_CMD_MMC
 
 #ifndef CONFIG_SPL_BUILD
+#define CONFIG_SYS_CONSOLE_IS_IN_ENV
+#define CONFIG_NETCONSOLE
+#define CONFIG_USB_ETHER
+#define CONFIG_USB_ETH_RNDIS
+#define CONFIG_USBNET_DEVADDR "de:ad:be:ef:00:01"
+#define CONFIG_USBNET_HOST_ADDR "de:ad:be:ef:00:00"
+
 #define BOOT_TARGET_DEVICES(func) \
         func(MMC, mmc, 0) \
         func(MMC, mmc, 1) \
@@ -120,6 +127,10 @@
 	"fdt_addr_r=0x83000000\0" \
 	"ramdisk_addr_r=0x83800000\0" \
 	"console=ttymxc0,115200\0" \
+	"bootargs=${console}\0" \
+	"stdin=nc,serial\0" \
+	"stdout=nc,serial\0" \
+	"stderr=nc,serial\0" \
 	BOOTENV
 
 /* Link Definitions */