cfg: fix incorrect stm32-performance stick config

This hardware uses a output enable buffer that was not correctly defined.
Fixes issues when using the new ftdi driver.

Change-Id: Iba6235a71a6d3c7d16ab729f858b336a4574dfea
Signed-off-by: Spencer Oliver <spen@spen-soft.co.uk>
Reviewed-on: http://openocd.zylin.com/883
Tested-by: jenkins

tcl/interface/ftdi/stm32-stick.cfg

@@ -13,6 +13,6 @@ interface ftdi
 ftdi_device_desc "STM32-PerformanceStick"
 ftdi_vid_pid 0x0640 0x002d
 
-ftdi_layout_init 0x0188 0x038b
+ftdi_layout_init 0x0388 0x038b
 ftdi_layout_signal nTRST -data 0x0100
-ftdi_layout_signal nSRST -data 0x0080
+ftdi_layout_signal nSRST -data 0x0080 -noe 0x200