Clarify that overriding the -h/-D flags through flags in device.hints
only works for sio(4) but not for uart(4) which no longer has this flag.
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@ -220,15 +220,14 @@ you can use the
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option to force the kernel to use the serial port as its
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console device.
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The serial port driver
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.Xr uart 4
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.Xr sio 4
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(but not
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.Xr uart 4 )
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has a flag (0x20) to override this option.
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If that flag is set, the serial port will always be used as the console,
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regardless of the
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.Fl h
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option described here.
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See the man page for
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.Xr uart 4
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for more details.
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.It Fl m
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mute the console to suppress all console input and output during the
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boot.
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