Add UART and JTAG information for the Birch phone
As mentioned in Matrix:
spaetz
The schematics include an UART DBG
Page 5
And JTAG Debug on p.6
So at least these are connected
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As mentioned in Matrix:
spaetz
The schematics include an UART DBG
Page 5
And JTAG Debug on p.6
So at least these are connected