Configure rockpi rootfs to be synchronous

This makes sure that it doesn't get corrupted when we pull power.

We only ever write to it to deploy things so writing doesn't need to be
fast.

Signed-off-by: Ravago Jones <ravagojones@gmail.com>
Change-Id: I7406796a981d6f09100200073673b0a0b7499d98
diff --git a/frc971/rockpi/build_rootfs.sh b/frc971/rockpi/build_rootfs.sh
index bb8b84a..78ae6ac 100755
--- a/frc971/rockpi/build_rootfs.sh
+++ b/frc971/rockpi/build_rootfs.sh
@@ -168,13 +168,13 @@
 cat << __EOF__ | sudo tee "${PARTITION}/boot/sdcard_extlinux.conf"
 label Linux ${KERNEL_VERSION}
     kernel /vmlinuz-${KERNEL_VERSION}
-    append earlycon=uart8250,mmio32,0xff1a0000 earlyprintk console=ttyS2,1500000n8 root=/dev/mmcblk0p2 ro rootfstype=ext4 rootwait
+    append earlycon=uart8250,mmio32,0xff1a0000 earlyprintk console=ttyS2,1500000n8 root=/dev/mmcblk0p2 ro rootfstype=ext4 rootflags=data=journal rootwait
     fdtdir /dtbs/${KERNEL_VERSION}/
 __EOF__
 cat << __EOF__ | sudo tee "${PARTITION}/boot/emmc_extlinux.conf"
 label Linux ${KERNEL_VERSION}
     kernel /vmlinuz-${KERNEL_VERSION}
-    append earlycon=uart8250,mmio32,0xff1a0000 earlyprintk console=ttyS2,1500000n8 root=/dev/mmcblk1p2 ro rootfstype=ext4 rootwait
+    append earlycon=uart8250,mmio32,0xff1a0000 earlyprintk console=ttyS2,1500000n8 root=/dev/mmcblk1p2 ro rootfstype=ext4 rootflags=data=journal rootwait
     fdtdir /dtbs/${KERNEL_VERSION}/
 __EOF__