contrib/firmware: add 'send not acknowledged' function to the i2c bit-banging implementation

Change-Id: I60597ebc126da4acb00654513b96f52261253e12
Signed-off-by: Ahmed BOUDJELIDA <aboudjelida@nanoxplore.com>
Reviewed-on: https://review.openocd.org/c/openocd/+/7811
Tested-by: jenkins
Reviewed-by: Antonio Borneo <borneo.antonio@gmail.com>

contrib/firmware/angie/c/src/usb.c

@@ -798,6 +798,9 @@ void i2c_recieve(void)
 
 		EP8FIFOBUF[count - 1] = receive_byte();
 
+		/*  send Nack:  */
+		send_nack();
+
 		/*   stop   */
 		stop_cd();