coresight: Adding coresight support for arm64 architecture

Most CoreSight blocks are 64-bit ready.  As such move configuration
entries from "arch/arm/Kconfig.config" to the driver's subdirectory
and source the newly created Kconfig from architecture specific
Kconfig.debug files.

Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>