soc: qcom: service-locator: Use interruptible wait for locator

Using uninterruptible wait for locator service can lead to
the task disk-sleeping indefinitely in cases where pd-mapper
service is not going to be available.
Use interruptible wait with timeout to skip the wait
gracefully in those cases.

Change-Id: Id5cd3ad716a164ecb86f816111cba90e3b105c3e
Signed-off-by: Jitendra Sharma <shajit@codeaurora.org>
[isaacm@codeaurora.org: resolve trivial merge conflicts]
Signed-off-by: Isaac J. Manjarres <isaacm@codeaurora.org>