usb: gadget: f_ipc: Add IPC function driver for QRTR support

Add snapshot for f_ipc from msm-4.9 commit daaa935914c7
("usb: gadget: f_ipc: Use timeout when waiting for request completion").

Change-Id: I0a0750753b59c743c293ff0e979d4a86a054db5a
Signed-off-by: Gustavo Solaira <gustavos@codeaurora.org>