change uart_init() to uart_open() match open/close

Signed-off-by: surenyi <surenyi82@qq.com>

packages/vsky/libdsp/driver/uart.cpp

@@ -80,7 +80,7 @@ static Uart *__uarts[MAX_UARTS] = {
 
 #define hUartRegs ((CSL_UartRegsOvly)_uart->regbase())
 
-uart_t uart_init(int bus)
+uart_t uart_open(int bus)
 {
     uart_t _uart = __uarts[bus];
     _uart->doInit();

packages/vsky/libdsp/inc/uart.h

@@ -19,7 +19,7 @@ extern "C" {
 
 typedef struct Uart * uart_t;
 
-uart_t  uart_init(int uart);
+uart_t  uart_open(int uart);
 
 /* data in */
 int     uart_is_ready(uart_t);