[PATCH v4 3/3] event/dlb2: enhance DLB credit handling

[Sevincer, Abdullah]

>+This new patch is full of compilation flags clutter, can you make it runtime?
Thanks for the reviews Jerin, we can make it run time but it will cost more cycles and new APIs in the PMD to set those run time params. The reason we do it this way is to save cycles also not to make cli params longer.

>+Adding @Richardson, Bruce   @Thomas Monjalon   to comment on this, I
>+am not sure driver specific
>+meson_options.txt is a good path?