phy: rockchip: samsung-hdptx: Cleanup *_cmn_init_seq lists

phy: rockchip: samsung-hdptx: Cleanup *_cmn_init_seq lists

Drop redundant reg_sequence entries from rk_hdptx_common_cmn_init_seq[],
i.e. those that are either duplicated or overridden in
rk_hdptx_tmds_cmn_init_seq[].

Additionally, a few items do not really belong to the former, hence move
them to the latter.  That's mostly a preparatory step for adding FRL
support.

No functional changes intended at this point.

Signed-off-by: Cristian Ciocaltea <cristian.ciocaltea@collabora.com>
Link: https://patch.msgid.link/20260113-phy-hdptx-frl-v6-6-8d5f97419c0b@collabora.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>