coresight-etm4x: Controls pertaining to the VM ID functions

Adding sysfs entries to access and configure specifics about the
virtual machine ID comparator functions.

Change-Id: Ic09857eb42dc9e2346607ef57638e7696fe5fd6b
Signed-off-by: Pratik Patel <pratikp@codeaurora.org>
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Git-commit: 40d8ebf0715f86b0231927a80bbc068869cc5ef1
Git-repo: git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git


Signed-off-by: Shashank Mittal <mittals@codeaurora.org>