Fix cunit path
Fix cunit path

Add include and lib path
Only check for cunit if no explicit path is given

Signed-off-by: Mike Holmes <ed44c09f4d7f698f5510adc894a872c73e08c8bd@linaro.org>
Signed-off-by: Maxim Uvarov <db4d16e02ae2d7493db430203537da8b2e34f290@linaro.org>

mike-holmes-linaro/odp,rsalveti/odp,ravineet-singh/odp,ravineet-singh/odp,nmorey/odp,kalray/odp-mppa,rsalveti/odp,nmorey/odp,rsalveti/odp,kalray/odp-mppa,ravineet-singh/odp,nmorey/odp,mike-holmes-linaro/odp,kalray/odp-mppa,kalray/odp-mppa,erachmi/odp,dkrot/odp,rsalveti/odp,dkrot/odp,kalray/odp-mppa,dkrot/odp,erachmi/odp,nmorey/odp,kalray/odp-mppa,rsalveti/odp,mike-holmes-linaro/odp,dkrot/odp,ravineet-singh/odp,erachmi/odp,mike-holmes-linaro/odp,erachmi/odp,kalray/odp-mppa