Refactor reconcileNormal function to accept context from caller

[carmal891]

/kind bug
/area provider/ibmcloud

What steps did you take and what happened:
Refactor the existing reconcileNormal function to accept a context parameter from the caller.

1. The new function signature should be:
   reconcileNormal(ctx context.Context, machineScope *scope.PowerVSMachineScope)

2. Update logs to use contextual logging with appropriate verbosity level - https://cluster-api.sigs.k8s.io/developer/logging#contextual-logging

3. All code sections where reconcileNormal is invoked must also be updated accordingly

What did you expect to happen:

Anything else you would like to add:
[Miscellaneous information that will assist in solving the issue.]

Environment:

• Cluster-api version:
• Minikube/KIND version:
• Kubernetes version: (use kubectl version):
• OS (e.g. from /etc/os-release):

[carmal891]

/assign