media: drivers/media/pci/tw5864/Tw5864-reg.h: fix typo issues

change 'syncrous' into 'synchronous'

Signed-off-by: Herman <yanshuaijun@yulong.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>