crypto/scheduler: add minimum head/tailroom requirement
crypto/scheduler: add minimum head/tailroom requirement

Minimum head/tailroom requirement for each PMD has to be considered
while populating the dev_info.

Signed-off-by: Anoob Joseph <854cf518c6746dae2d952dd5f30e699f0b28a022@caviumnetworks.com>
Acked-by: Pablo de Lara <28355d9cfe41bb8148aea0fb24f47aae8f4217a1@intel.com>

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