usb: cdns3: trace: fix some endian issues

[ Upstream commit 65b7cf48c211ece5e2560a334eb9608e48775a8f ]

It is found by sparse.

Reported-by: kbuild test robot <lkp@intel.com>
Signed-off-by: Peter Chen <peter.chen@nxp.com>
Signed-off-by: Felipe Balbi <balbi@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>