Minor clean-up - Open1788 and LPC17xx serial

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@5699 42af7a65-404d-4744-a932-0658087f49c3

arch/arm/src/lpc17xx/lpc17_serial.c

@@ -1242,9 +1242,11 @@ static int up_ioctl(struct file *filep, int cmd, unsigned long arg)
 
         priv->baud = cfgetispeed(termiosp);
 
-        /* Re-calculate the optimal CCLK divisor for the new baud */
+        /* TODO: Re-calculate the optimal CCLK divisor for the new baud and
+         * and reset the divider in the CLKSEL0/1 register.
+         */
 
-#ifdef LPC176x
+#if 0 // ifdef LPC176x
         priv->cclkdiv = lpc17_uartcclkdiv(priv->baud);
 #endif
         /* DLAB open latch */