x86, powercap, rapl: Add Skylake Server model number

SKX uses similar RAPL interface as Broadwell server according to
Jacob Pan.

Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Dave Hansen <dave@sr71.net>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Jacob Pan <jacob.jun.pan@linux.intel.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Rafael J. Wysocki <rjw@rjwysocki.net>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: jacob.jun.pan@intel.com
Cc: linux-pm@vger.kernel.org
Link: http://lkml.kernel.org/r/20160603001955.38E1E684@viggo.jf.intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>

drivers/powercap/intel_rapl.c

@@ -1114,6 +1114,7 @@ static const struct x86_cpu_id rapl_ids[] __initconst = {
 
 	RAPL_CPU(INTEL_FAM6_SKYLAKE_DESKTOP,	rapl_defaults_core),
 	RAPL_CPU(INTEL_FAM6_SKYLAKE_MOBILE,	rapl_defaults_core),
+	RAPL_CPU(INTEL_FAM6_SKYLAKE_X,		rapl_defaults_hsw_server),
 	RAPL_CPU(INTEL_FAM6_KABYLAKE_MOBILE,	rapl_defaults_core),
 	RAPL_CPU(INTEL_FAM6_KABYLAKE_DESKTOP,	rapl_defaults_core),