padjffs2: add a different kind of padding (using standard jffs2 elements) to work around broken boot loaders for kernel partitions

Signed-off-by: Felix Fietkau <nbd@openwrt.org>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@38804 3c298f89-4303-0410-b956-a3cf2f4a3e73
ar71xx: use the new padjffs2 padding on Ubiquiti UAP-PRO to make the boot loader stop searching after the kernel partition

Signed-off-by: Felix Fietkau <nbd@openwrt.org>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@38805 3c298f89-4303-0410-b956-a3cf2f4a3e73
ramips: use dd bs=4096k instead of bs=4M to make it more portable

Signed-off-by: Felix Fietkau <nbd@openwrt.org>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@38806 3c298f89-4303-0410-b956-a3cf2f4a3e73
ar71xx: Unifi AP Pro sysupgrade patch

The current implementation of mtd will not append the backup
file created by sysupgrade to the correct partition, as mtd will append
the data to first jffs2 partition it finds. As the kernel is also
stored on a jffs2 partition (which resides before the overlay
partition), the data will be appended to this partition.

To fix this problem, a new option

-s <number>             skip the first n bytes when appending data to the jffs2 partiton, defaults to "0"

is added to mtd.

Signed-off-by: Peter Wagner <tripolar@gmx.at>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@38807 3c298f89-4303-0410-b956-a3cf2f4a3e73