qcom: cpufreq-hw: Use the topology coreid for offset

Use the topology_core_id() API to calculate the offset
of the CPU cores. This will help to correctly calculate the
offset in case of CPU with fused cores.

Change-Id: I78992edc3a646b8062e8bdd80f4c72e8c97387ec
Signed-off-by: Prerna Singh <quic_prersing@quicinc.com>