coresight-etm4x: Controls pertaining to the ViewInst register

Adding sysfs entries to control the ViewInst register's event
selector along with secure and non-secure exception level
instruction tracing.

Change-Id: I53a834f3437f639ccb75989003f2add4aaa4f9b3
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: 43ba6a7b00ebca1f95bd5a64ceed4f3bae8aeca4
Git-repo: git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git


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