media: igorplugusb: receiver overflow should be reported

[ Upstream commit 8fede658e7ddb605bbd68ed38067ddb0af033db4 ]

Without this, some IR will be missing mid-stream and we might decode
something which never really occurred.

Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>