Enable UART2 hardware flow control

configname: CONFIG_BFIN_UART2_CTSRTS

Linux Kernel Configuration
└─>Device Drivers
└─>Character devices
└─>Serial drivers
└─>Enable UART2 hardware flow control
In linux kernel since version 2.6.24 (release Date: 2008-01-24)  
Enable hardware flow control in the driver. Using GPIO emulate the CTS/RTS
signal.