media: platform: rzg2l-cru: rzg2l-video: Fix the comment in rzg2l_cru_start_streaming_vq()

Replace "buffer." -> "buffer", for consistency with rest of the
comment blocks in rzg2l_cru_start_streaming_vq().

Reported-by: Pavel Machek <pavel@denx.de>
Closes: https://lore.kernel.org/all/ZtWNFuw70nkB37EK@duo.ucw.cz/


Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
Link: https://lore.kernel.org/r/20240905112508.160560-1-biju.das.jz@bp.renesas.com


Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>