coresight: moving to new "hwtracing" directory

Keeping drivers related to HW tracing on ARM, i.e coresight,
under "drivers/coresight" doesn't make sense when other
architectures start rolling out technologies of the same
nature.

As such creating a new "drivers/hwtracing" directory where all
drivers of the same kind can reside, reducing namespace
pollution under "drivers/".

Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
(cherry picked from commit 01081f5ab9916603555f236b11f76bb00e4e01e9)
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>

Conflicts:
	arch/arm64/Kconfig.debug
	drivers/Makefile
17 files changed