USB: gadget: Set pm_qos_req-> type to AFFINITY_IRQ for android device

Current implementation is adding PM QOS request type default set to
zero, which means USB driver is updating new PM QOS request value
to all CPUs even though some CPUs are offline. This could cause
visible power impact if incase clusters are having different bucks.
Hence set PM QOS request type to AFFINITY_IRQ so that it updates to
CPU to which IRQ affinity is set.

Change-Id: Ie72d2f936c2d7146aa9b5c43393707d603bea8e9
Signed-off-by: Vijayavardhan Vennapusa <vvreddy@codeaurora.org>