usb: Remove annoying warning about bogus URB

When ath9k-htc Wi-Fi dongle is used with generic OHCI controller
infinite stream of warnings appears in debug console like this:
-------------------------->8----------------------
usb 1-1: new full-speed USB device number 2 using ohci-platform
usb 1-1: ath9k_htc: Firmware ath9k_htc/htc_9271-1.4.0.fw requested
usb 1-1: ath9k_htc: Transferred FW: ath9k_htc/htc_9271-1.4.0.fw, size:
51008
------------[ cut here ]------------
WARNING: CPU: 0 PID: 19 at drivers/usb/core/urb.c:449
usb_submit_urb+0x1b4/0x498()
usb 1-1: BOGUS urb xfer, pipe 1 != type 3
Modules linked in:
CPU: 0 PID: 19 Comm: kworker/0:1 Not tainted
4.4.0-rc4-00017-g00e2d79-dirty #3
Workqueue: events request_firmware_work_func

Stack Trace:
arc_unwind_core.constprop.1+0xa4/0x110
---[ end trace 649ef8c342817fc2 ]---
------------[ cut here ]------------
WARNING: CPU: 0 PID: 19 at drivers/usb/core/urb.c:449
usb_submit_urb+0x1b4/0x498()
usb 1-1: BOGUS urb xfer, pipe 1 != type 3
Modules linked in:
CPU: 0 PID: 19 Comm: kworker/0:1 Tainted: G        W
4.4.0-rc4-00017-g00e2d79-dirty #3
Workqueue: events request_firmware_work_func

Stack Trace:
arc_unwind_core.constprop.1+0xa4/0x110
---[ end trace 649ef8c342817fc3 ]---
------------[ cut here ]------------
-------------------------->8----------------------

There're some discussions in mailing lists proposing to disable
that particular check alltogether and magically all seem to work
fine with muted warning.

Anyways new thread on that regard could be found here:
http://lists.infradead.org/pipermail/linux-snps-arc/2016-July/001310.html



Let's see what comes out of that new discussion, hopefully patching
of generic USB stuff won't be required then.

Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>