Currently Rx Break Error condition is not checked using UART_DM_SR register. Hence by default null-character is being inserted on receiving Rx Error or Rx Break condition. Application sets termios c_iflag if it needs any notification related to any Rx Error or Break condition. Hence add support to handle Rx Break condition and insert null-character conditionally based on termios.c_iflag. CRs-Fixed: 412201 Change-Id: I7f496e42757b949f597d5dbe5c1f1ca88ee53c8c Signed-off-by: Mayank Rana <mrana@codeaurora.org>