[datapipe] Do not assume audio jack is connected. JB#33997
[datapipe] Do not assume audio jack is connected. JB#33997

The jack_sense_pipe is initialized to COVER_CLOSED state. If the input
devices that provide the actual state have not been registered at the
time of mce startup, this initial assumption leaks through and triggers
temporary display on state - which in turn can cause the display to later
blank unexpectedly during bootup / while running the startup wizard.

Use COVER_UNDEF / "unknown" as initial jack sense state.

mlehtima/mce,maikelwever/mce,mlehtima/mce,maikelwever/mce,mlehtima/mce,mlehtima/mce,spiiroin/mce,spiiroin/mce,spiiroin/mce,maikelwever/mce,spiiroin/mce,maikelwever/mce