Unescaped left brace in string literals is deprecated since perl
v5.21.1.
Not a Perl programmer here so please review!
Change-Id: I724d8fa616d603e032e07afb9b8933e0ec95045b
Signed-off-by: Paul Fertser <fercerpav@gmail.com>
Reviewed-on: http://openocd.zylin.com/3801
Tested-by: jenkins