soc: qcom: Collect minidump when encryption not required

Minidump was supported only with encrypted dumps, but there
are cases when minidump need to be collected even when encryption
is not supported.
This change caters to such requirement and collects minidump even
when encryption is not required.

Change-Id: I74d94099fd58fe076fc6e9168bac8744f97d2e46
Signed-off-by: Avaneesh Kumar Dwivedi <akdwived@codeaurora.org>