sharpen reset_config for imx27 - use both trst & srst. srst pulls trst.

git-svn-id: svn://svn.berlios.de/openocd/trunk@2493 b42882b7-edfa-0310-969c-e2dbd0fdcd60

tcl/target/imx21.cfg

 #use combined on interfaces or targets that can't set TRST/SRST separately
+#
+# Hmmm.... should srst_pulls_trst be used here like i.MX27???
 reset_config trst_and_srst
 
 if { [info exists CHIPNAME] } {	

tcl/target/imx27.cfg

@@ -4,7 +4,7 @@
 # Without setting these options correctly you'll see all sorts
 # of weird errors, e.g. MOE=0xe, invalid cpsr values, reset
 # failing, etc.
-reset_config srst_only srst_pulls_trst
+reset_config trst_and_srst srst_pulls_trst
 
 if { [info exists CHIPNAME] } {	
    set  _CHIPNAME $CHIPNAME