drm/bridge: tc358768: Use dev for dbg prints, not priv->dev

drm/bridge: tc358768: Use dev for dbg prints, not priv->dev

[ Upstream commit 89cfd50e13f1bead4350998a3a77422bef1ee0a5 ]

Simplify the code by capturing the priv->dev value to dev variable, and
use it.

Reviewed-by: Peter Ujfalusi <peter.ujfalusi@gmail.com>
Tested-by: Maxim Schwalm <maxim.schwalm@gmail.com> # Asus TF700T
Tested-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
Signed-off-by: Robert Foss <rfoss@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20230906-tc358768-v4-8-31725f008a50@ideasonboard.com
Stable-dep-of: f1dabbe64506 ("drm/bridge: tc358768: Fix tc358768_ns_to_cnt()")
Signed-off-by: Sasha Levin <sashal@kernel.org>