libs/eas/rfc: add support to taskset the workload on specified CPUs
libs/eas/rfc: add support to taskset the workload on specified CPUs

The CPUs for tasks pinning can be either:
- a specified CPU id
- all big/little CPUs
- first/last of the bigs/littles CPUs

Signed-off-by: Patrick Bellasi <431c86f368affbc3148c4669fbd465131f7e82cb@arm.com>

credp/lisa,bjackman/lisa,ARM-software/lisa,credp/lisa,arnoldlu/lisa,ARM-software/lisa,credp/lisa,mdigiorgio/lisa,arnoldlu/lisa,bjackman/lisa,ARM-software/lisa,ARM-software/lisa,joelagnel/lisa,joelagnel/lisa,credp/lisa,JaviMerino/lisa,mdigiorgio/lisa