TQM5200: fix spurious characters on second serial interface

With this patch PSC3 is configured as UART. This is done, because if
the pins of PSC3 are not configured at all (-> all pins are GPI),
due to crosstalk, spurious characters may be send over the RX232_2_TXD
signal line.

Signed-off-by: Martin Krause <martin.krause@tqs.de>

include/configs/TQM5200.h

@@ -547,7 +547,7 @@
 #  if defined (CONFIG_TQM5200_REV100)
 #   error TQM5200 REV100 not supported on STK52XX REV200 or above
 #  else/* TQM5200 REV200 and above */
-#   define CFG_GPS_PORT_CONFIG	0x91500004
+#   define CFG_GPS_PORT_CONFIG	0x91500404
 #  endif
 # endif
 #elif defined (CONFIG_FO300)