intel_th: pci: Add Elkhart Lake SOC support

intel_th: pci: Add Elkhart Lake SOC support

BugLink: https://bugs.launchpad.net/bugs/1858428
commit 88385866bab8d5e18c7f45d1023052c783572e03 upstream.

This adds support for Intel Trace Hub in Elkhart Lake.

Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20191217115527.74383-3-alexander.shishkin@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Seth Forshee <seth.forshee@canonical.com>