[Buildroot] [PATCH v4 1/1] boot/uboot/uboot.mk: add pmufw.elf support

[Frager, Neal]

Hello Luca,

> This patch adds support for zynqmp pmufw.elf files.
> It will allow buildroot to use pmufw.elf binaries directly from the 
> Xilinx git repository built by petalinux in addition to still 
> supporting pmufw.bin binaries built by the zynqmp-pmufw-builder.
> 
> https://github.com/Xilinx/ubuntu-firmware/tree/v2022.1_22.04_1/xlnx-fi
> rmware
> 
> Signed-off-by: Neal Frager <neal.frager at amd.com>

> Reviewed-by: Luca Ceresoli <luca.ceresoli at bootlin.com>

> Thank you very much for working on a solution to this unpleasant situation. I still would like to address it, but spare time is not easily available... however I'm always happy to received patches for zynqmp-pmufw-builder! ;-)

Thank you for your understanding.  As you can see with this patch, pmufw.bin files are still accepted.  The moment zynqmp-pmufw-builder is fixed, developers can use it with buildroot again.

I understand the lack of spare time.  If I ever get some, I will take a closer look at how to patch the zynqmp-pmufw-builder microblaze compiler.

Best regards,
Neal Frager
AMD