ath10k: Fix compilation error in host cap due to downstream QMI

struct qmi_elem_info members in downstream kernel are
not in sync with up streamed implementation.
In order to enable compilation with down streamed implementation
use downstream qmi_elem_info definition.

Change-Id: Ife64900aeb3d963bc763467ab912b0224298080d
Signed-off-by: Govind Singh <govinds@codeaurora.org>