soc: qcom: Improve msm_minidump_remove_region api

Improve the api to better handle certain error scenarios
and move console prints outside of irq/locked code
sections.

Change-Id: I0ec6f37400949c014ea2e94f61a239294c954bf5
Signed-off-by: Neeraj Upadhyay <neeraju@codeaurora.org>