drm/vc4: vec: Fix timings for VEC modes

stable inclusion
from stable-v5.10.150
commit bfdb391d57df9aad8cb5ed241d71bf9655b40730
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I6D0XA

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=bfdb391d57df9aad8cb5ed241d71bf9655b40730



--------------------------------

[ Upstream commit 30d7565b ]

This commit fixes vertical timings of the VEC (composite output) modes
to accurately represent the 525-line ("NTSC") and 625-line ("PAL") ITU-R
standards.

Previous timings were actually defined as 502 and 601 lines, resulting
in non-standard 62.69 Hz and 52 Hz signals being generated,
respectively.

Signed-off-by: Mateusz Kwiatkowski <kfyatek+publicgit@gmail.com>
Acked-by: Noralf Trønnes <noralf@tronnes.org>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Link: https://patchwork.freedesktop.org/patch/msgid/20220728-rpi-analog-tv-properties-v2-28-459522d653a7@cerno.tech


Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Jialin Zhang <zhangjialin11@huawei.com>