tcl/target: Move TI targets to ti folder

Move the ti targets to a TI folder. Since the folder is ti, we can
drop the "ti" prefix from the files themselves.

Done via the following script:

 mkdir target/ti
 FILES=`ls target/ti*.cfg target/omap*.cfg target/am335x.cfg
           target/amdm37x.cfg target/icepick.cfg target/stellaris.cfg
		   target/davinci.cfg`
 for cname in $FILES
 do
   bname=`basename $cname`
   nname=`echo $bname|sed -e "s/^ti-//g"|sed -e "s/ti_//g"`
   npath="target/ti/$nname"
   echo "$cname => $npath"
   fref=`git grep $cname .|cut -d ':' -f1|sort -u`
   sed -i -e "s&$cname&$npath&g" $fref
   git mv $cname $npath
 done

Change-Id: I9f94dc6bb01f73721d4ff96be92cb51de2cbf0e2
Suggested-by: Antonio Borneo <borneo.antonio@gmail.com>
Signed-off-by: Nishanth Menon <nm@ti.com>
Reviewed-on: https://review.openocd.org/c/openocd/+/9203
Tested-by: jenkins
Reviewed-by: Antonio Borneo <borneo.antonio@gmail.com>

tcl/board/dm355evm.cfg

@@ -4,7 +4,7 @@
 #   http://focus.ti.com/docs/toolsw/folders/print/tmdsevm355.html
 #   http://c6000.spectrumdigital.com/evmdm355/
 
-source [find target/ti_dm355.cfg]
+source [find target/ti/dm355.cfg]
 
 reset_config trst_and_srst separate