Temporarily disable uart dma

Author: nkming2

inc/libsc/k60/uart_device.h

@@ -53,11 +53,6 @@ class UartDevice
 		 * size in bytes will vary
 		 */
 		uint8_t tx_buf_size = 14;
-		/**
-		 * (Experimental) If value != -1, DMA will be enabled for this UART's Tx,
-		 * using the DMA channel specified here
-		 */
-		uint8_t tx_dma_channel = static_cast<uint8_t>(-1);
 
 		/**
 		 * The listener for Rx events. Return true if the listener has consumed

src/libsc/k60/uart_device.cpp

@@ -329,7 +329,7 @@ UartDevice::UartDevice(const Initializer &initializer)
 		  m_rx_isr(initializer.config.rx_isr),
 		  m_tx_buf(new TxBuffer(initializer.config.tx_buf_size)),
 		  m_is_tx_idle(true),
-		  m_tx_dma_channel(initializer.config.tx_dma_channel),
+		  //m_tx_dma_channel(initializer.config.tx_dma_channel),
 		  m_dma(nullptr),
 		  m_uart(nullptr)
 {