tcl: Fix ${bindir}/tclsh symlink

tcl: Fix ${bindir}/tclsh symlink

* 8.6.1 version installs tclsh8.6 binary and tclsh symlink to tclsh${VER}
  (tclsh8.6.1) which doesn't exist
  lrwxrwxrwx 1 bitbake bitbake   12 Dec 26 16:19 sysroots/x86_64-linux/usr/bin/tclsh -> ./tclsh8.6.1
  -rwxr-xr-x 2 bitbake bitbake 8.8K Dec 26 16:19 sysroots/x86_64-linux/usr/bin/tclsh8.6
* add another symlinks tclsh8.6.1 -> tclsh8.6

Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>
Signed-off-by: Saul Wold <sgw@linux.intel.com>