msm: ipa3: call napi_schedule() from irq context

The current implementation of IPA driver is to call
napi_schedule() from workqueue context creates a latency issue
which leads to high ping RTT.
This change will call napi_schedule() from irq context directly.

Change-Id: I17e31251b09a49b55437feb8ecd125bba37d33a8
CRs-Fixed: 2079976
Acked-by: Ady Abraham <adya@qti.qualcomm.com>
Signed-off-by: Skylar Chang <chiaweic@codeaurora.org>