gst-plugins-bad: avtp: how to notify meson to use custom kernel header

[John Rama]

Hi Desouza,

> 
> Glad that you managed to solve the issue - but this hint may be useful
> for the next time:  
> 
> `make INSTALL_HDR_PATH=<path_where_to_install_headers> headers_install`
> 
> On the Linux source. It should install the appropriate kernel headers
> for the kernel source you have.
> Then, with CFLAGS='-I<path_where_to_install_headers>/include',
> everything should be fine.
> 

Great thanks for your feedback. 
I did not know that !!
I've tried and it's really quick. You do not have to compile kernel.

Thanks again.

John