[source] at91: Add ext4 filesystem

[LEDE Commits]

hauke pushed a commit to source.git, branch master:
https://git.lede-project.org/1b368f164131f21bb6870a1e75421d30e6acd0ac

commit 1b368f164131f21bb6870a1e75421d30e6acd0ac
Author: Sandeep Sheriker Mallikarjun <sandeepsheriker.mallikarjun at microchip.com>
AuthorDate: Fri Oct 13 10:21:51 2017 -0700

    at91: Add ext4 filesystem
    
    Add ext4 filesystem for creating sdcard image with ext4 rootfs and
    removing ext2 as it superset of ext4.
    
    Signed-off-by: Sandeep Sheriker Mallikarjun <sandeepsheriker.mallikarjun at microchip.com>
---
 target/linux/at91/Makefile | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/target/linux/at91/Makefile b/target/linux/at91/Makefile
index 948419a..c4de685 100644
--- a/target/linux/at91/Makefile
+++ b/target/linux/at91/Makefile
@@ -10,7 +10,7 @@ ARCH:=arm
 BOARD:=at91
 MAINTAINER:=Claudio Mignanti <c.mignanti at gmail.com>
 BOARDNAME:=Microchip (Atmel AT91)
-FEATURES:=squashfs targz ext2 usb usbgadget ubifs
+FEATURES:=ext4 squashfs targz usb usbgadget ubifs
 SUBTARGETS:=sama5 legacy
 
 KERNEL_PATCHVER:=4.4