[PATCH] config: set pkgconfig for ppc64le

[Ali Alnubani]

> On 8/29/22 3:30 AM, Thomas Monjalon wrote:
> > What is the conclusion on this patch?
> > It is good to go? Acked?
> 
> Not from me yet.
> 
> Just asked about the test environment so I can duplicate the issue.  My
> understanding is that Ubuntu cross-compiles for CI/CD are still working
> so I'd like to understand the test case the drives this need.
> 
> Dave

Trying to enable the mlx drivers when cross-building for ppc64le, I added the directory containing
the .pc files from an rdma-core (https://github.com/linux-rdma/rdma-core) ppc64le cross build, but Meson
didn't detect the dependencies without installing pkg-config-powerpc64le-linux-gnu and setting
binaries.pkgconfig as powerpc64le-linux-gnu-pkg-config.

I just tried to reproduce the issue with a cross build of numactl, but Meson will not
detect it, even with my change. Seems that PKG_CONFIG_PATH=:/path/to/numactl/build/lib/pkgconfig
gets ignored.

- Ali