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Add UART documentation

Specify to which pin/GPIO UART is connected
for both AR9271 and AR7010

Signed-off-by: Eugene Krasnikov <k.eugene.e@gmail.com>
Eugene Krasnikov 11 years ago
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      docs/uart

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docs/uart

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+Name     | TX pin | TX GPIO | RX pin | RX GPIO | Baudrate
+---------+--------+---------+--------+---------+--------
+AR9271   |   48   |  GPIO9  |   49   |  GPIO10 | 19200
+AR7010   |   54   |  GPIO8  |   52   |  GPIO9  | 115200