uart: added support for uart1

uart1 support added, tested with loop back.
SO0 |= _0004_SAU_CH2_DATA_OUTPUT_1;
SOL0 |= _0000_SAU_CHANNEL2_NORMAL;

Signed-off-by: Ajay <ajay@moxiedevices.com>
uart: tx with pc working

checked with pc, tx from board working, still rx failing
SO0 &= ~_0004_SAU_CH2_DATA_OUTPUT_1
SOL0 |= _0004_SAU_CHANNEL2_INVERTED;

Signed-off-by: Ajay <ajay@moxiedevices.com>
uart1: rx: changed start bit detection to rising edge

start bit sent by PC is with rising edge.
Made corresponding changes.

Signed-off-by: Ajay <ajay@moxiedevices.com>
uart1: baud rate: 38400

Changed baud rate for 4800 to 38400.
Signed-off-by: Ajay <ajay@moxiedevices.com>
uart1: send data

added support for UART1 send data varying tx length

Signed-off-by: Ajay <ajay@moxiedevices.com>
uart1: receive data

added support for uart1 multiple receive
Signed-off-by: Ajay <ajay@moxiedevices.com>
uart1: send and read data definition

Signed-off-by: Ajay <ajay@moxiedevices.com>
gg=G formatting changes

Signed-off-by: Ajay <ajay@moxiedevices.com>
uart1; removed unnecessary comments

cleaned coded by removing unnecessary commented lines

Signed-off-by: Ajay <ajay@moxiedevices.com>
uart1: init code called from user init

Signed-off-by: Ajay <ajay@moxiedevices.com>
uart1: test code: read write loopback

Added test code for read and write same - loopback test.

This code need to be further developed for receiving commands from host.

Signed-off-by: Ajay <ajay@moxiedevices.com>
project file

Signed-off-by: Ajay <ajay@moxiedevices.com>