tcl: remove trailing whitespace

The script checkpatch available in new Linux kernel offers an
experimental feature for automatically fix the code in place.
While still experimental, the feature works quite well for simple
fixes, like spacing.

This patch has been created automatically with the script under
review for inclusion in OpenOCD, using the command:
	find tcl/ -type f -exec ./tools/scripts/checkpatch.pl \
	-q --types TRAILING_WHITESPACE --fix-inplace -f {} \;

The patch only changes amount and position of whitespace, thus
the following commands show empty diff
	git diff -w
	git log -w -p
	git log -w --stat

Change-Id: Ie7e3a236f4db9c70019e3b3c7e851edbd3a9dd84
Signed-off-by: Antonio Borneo <borneo.antonio@gmail.com>
Reviewed-on: http://openocd.zylin.com/5616
Reviewed-by: Andreas Fritiofson <andreas.fritiofson@gmail.com>
Tested-by: jenkins

tcl/board/hilscher_nxdb500sys.cfg

@@ -17,7 +17,7 @@ $_TARGETNAME configure -event reset-init {
   arm7_9 dcc_downloads enable
 
   sdram_fix
-  
+
   puts "Configuring SDRAM controller for paired K4S561632C (64MB) "
   mww 0x00100140 0
   mww 0x00100144 0x03C13261