power: reset: Don't set dload_mode in kdump kernel

Kdump kernel needs to retain the dload type set by primary
kernel. Currenly dload type will be set to default value of fulldump.

Change-Id: I9f2a4f4b815166c86d103d2ef94c56c4005df1a3
Signed-off-by: Akshay Adiga <aadiga@codeaurora.org>