msm: ipa: return the wifi stats when reset is set

After Andorid-O, every time after framework queries
the WIFI-stats, it will reset the stats because
framework would like to know only the difference of
data usage, not accumulated stats.

Change-Id: I66bbf779f872c54311dcc8e3ba635949126e94ac
Acked-by: Pooja Kumari <kumarip@qti.qualcomm.com>
Signed-off-by: Mohammed Javid <mjavid@codeaurora.org>
Signed-off-by: Skylar Chang <chiaweic@codeaurora.org>