configs: apalis-tk1: fix boot failure using ext4 rootfs

Trying to boot from an ext4 rootfs fails due to us defaulting to ext3.
While the downstream T20/T30 L4T kernel has issues with ext4 later TK1
L4T should work just fine with it. Hence enable ext4 for sdboot and
usbboot on TK1.

Signed-off-by: Sanchayan Maity <maitysanchayan@gmail.com>
Acked-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
Signed-off-by: Tom Warren <twarren@nvidia.com>

include/configs/apalis-tk1.h

@@ -80,7 +80,7 @@
 		"&& setenv dtbparam ${fdt_addr_r}\0"
 
 #define SD_BOOTCMD \
-	"sdargs=ip=off root=/dev/mmcblk1p2 rw rootfstype=ext3 rootwait\0" \
+	"sdargs=ip=off root=/dev/mmcblk1p2 rw rootfstype=ext4 rootwait\0" \
 	"sdboot=run setup; setenv bootargs ${defargs} ${sdargs} ${setupargs} " \
 		"${vidargs}; echo Booting from SD card in 8bit slot...; " \
 		"run sddtbload; load mmc 1:1 ${kernel_addr_r} " \
@@ -91,7 +91,7 @@
 		"&& setenv dtbparam ${fdt_addr_r}\0"
 
 #define USB_BOOTCMD \
-	"usbargs=ip=off root=/dev/sda2 rw rootfstype=ext3 rootwait\0" \
+	"usbargs=ip=off root=/dev/sda2 rw rootfstype=ext4 rootwait\0" \
 	"usbboot=run setup; setenv bootargs ${defargs} ${setupargs} " \
 		"${usbargs} ${vidargs}; echo Booting from USB stick...; " \
 		"usb start && run usbdtbload; load usb 0:1 ${kernel_addr_r} " \