Import all improvements made in the lzma-loader since development on the
ath79 target started.

This also reverts fe594bf90d09 ("ath79: fix loader-okli, lzma-loader"), as
is obsoleted by 2ad60168b6af ("ar71xx: lzma-loader: move padding workaround
to gzip step").

Likely, many of the changes should be ported to the ramips lzma-loader as
well, but I don't have a device to test this.

Signed-off-by: Matthias Schiffer <mschiffer@universe-factory.net>

booting will hang most of the times on tl-wr1043nd-v1 without a KERNEL_CMDLINE value
add anything as a placeholder as kernel command line is taken from DTS

Signed-off-by: Lucian Cristian <lucian.cristian@gmail.com>

This target aims to replace ar71xx mid-term. The big part that is still
missing is making the MMIO/AHB wifi work using OF. NAND and mikrotik
subtargets will follow.

Signed-off-by: John Crispin <john@phrozen.org>