- Control brightness over DCS (11-bit) through a backlight device on
panels without a PWM backlight, such as the OLED
- Send display off when the panel is disabled and in the OLED suspend
list, and display on at the end of its init list, so it no longer
flashes gray when the screen turns off
- Read the power mode after setting the initial brightness, which waits
for the panel to take the command before video starts; without it the
boot animation stayed dark
- Read the 3 byte display ID properly, and treat machines compatible with
nintendo,aula as the OLED panel
- Use named DCS opcodes and end every command list with a terminator
- Log the display ID once instead of on every screen on