[DPDK/core Bug 1935] rte_lcore_to_cpu_id returns incorrect cpu-id when `lcore-map or re-map lcore` option used

[bugzilla at dpdk.org]

http://bugs.dpdk.org/show_bug.cgi?id=1935

            Bug ID: 1935
           Summary: rte_lcore_to_cpu_id returns incorrect cpu-id when
                    `lcore-map or re-map lcore` option used
           Product: DPDK
           Version: 26.03
          Hardware: All
                OS: All
            Status: UNCONFIRMED
          Severity: normal
          Priority: Normal
         Component: core
          Assignee: dev at dpdk.org
          Reporter: vipin.varghese at amd.com
  Target Milestone: ---

DPDK: 26.03
test application: modified examples/helloworld
cmd: 
 working: `./build/helloworld -l0,1,67,14,33`
 faulty-1: `./build/helloworld -l0,1,67,14,33 -R` 
 faulty-2: `./build/helloworld -l0 at 8,1 at 18,2 at 67,3 at 14,4 at 33`

expected behaviour: if there are eal args for remap or map lcore, the API (as
per current understanding) should return the actual core on which it runs. API
`rte_lcore_cpuset` returns a valid value in all cases.

attaching screenshot for reference

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