usb: gadget: gsi: Avoid spinlock lockup

In this case gsi_ctrl_clear_cpkt_queues function is called
which is holding spinlock and in the meantime dwc3_interrupt
occurred on same CPU which in turn is calling gsi_ctrl_clear_cpkt_queues
function and it is trying to acquire the same spinlock causing
deadlock.

This change disables the interrupts when spinlock is acquired
in gsi_ctrl_clear_cpkt_queues function.

Change-Id: Ia87a0a283ca6b6298083dddb448e4d649a4f8e89
Signed-off-by: Pratham Pratap <prathampratap@codeaurora.org>