Use 2 bits for msp displayport font page

[mmosca]

May allow for future 4 page fonts

[mmosca]

I may change the fontPage uint8_t array to attr uint8_t array and combine with the blink flag.

[RomanLut]

Blinking attribute handling can be removed from displayport_msp_osd.c completely.

Displayport_msp_osd does not support blinking attibute: https://github.com/iNavFlight/inav/blob/1dc91058761816cc2427495e48f373393e62cf32/src/main/io/displayport_msp_osd.c#L376

Software blinking is used, blinking attibute is not applied to characters in display.c: https://github.com/iNavFlight/inav/blob/1dc91058761816cc2427495e48f373393e62cf32/src/main/drivers/display.c#L49 https://github.com/iNavFlight/inav/blob/1dc91058761816cc2427495e48f373393e62cf32/src/main/drivers/display.c#L206 https://github.com/iNavFlight/inav/blob/1dc91058761816cc2427495e48f373393e62cf32/src/main/drivers/display.c#L66

So this code never executes: https://github.com/iNavFlight/inav/blob/1dc91058761816cc2427495e48f373393e62cf32/src/main/io/displayport_msp_osd.c#L322

and can be removed unless you plan to implement useDeviceBlink option similar to BF.

[MrD-RC]

There's no need to remove blink. It is in the API. It should be handled as specified by the API.

[RomanLut]

Should be optional then, displayport_msp_use_device_blink is OFF by default in betaflight, I guess for a reason.