drm/bridge: tc358775: Add burst and low-power modes

Burst and low-power modes are supported both for tc358765 and tc358775.

Reviewed-by: Michael Walle <mwalle@kernel.org>
Tested-by: Michael Walle <mwalle@kernel.org>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Reviewed-by: Robert Foss <rfoss@kernel.org>
Signed-off-by: Robert Foss <rfoss@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20240225062008.33191-8-tony@atomide.com