[PATCH v7] Add optimized Makefile support for SoCFPGA handoff

[Sune Brian]

> Arria 10 boards require the A10-specific filter script under:  arch/arm/mach-socfpga/qts-filter-a10.sh
>
> Invocation pattern: qts-filter-a10.sh <handoff-input-directory> <output-qts-dir>
>
> It processes a set of A10-specific XML and RBF inputs such as:
>
> pinmux.xml
> arria10_hps.xml
> pll.xml
> emif.xml
> core.rbf
> other Qsys-exported XML files

I had provided new patch and removed the A10.

Second because this is bash script and according to
what the new tools are supposed to look like.
Python script is new tools language and should be
followed accordingly.

As such I will not going to merge A10 to this build flow.
And any new family handoff should also put to
the same location as Tom suggestion and also
make things more clean and better on manage.
u-boot/tools/a10_bsp_generator.

Meantime, I think it is even better on generalizing
one folder for all Altera socfpga tools, with
requirements.txt as well.

Brian