soc/intel/skylake: Add ID's for Kabylake-R

Add CPUID, IGD, MCH & LPC ID of Kabylake-R.

Change-Id: I5ee7b3a2616f71137bba83c071288dbda2acde3d
Signed-off-by: Naresh G Solanki <naresh.solanki@intel.com>
Reviewed-on: https://review.coreboot.org/19218
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-by: Balaji Manigandan <balaji.manigandan@intel.com>
Reviewed-by: Furquan Shaikh <furquan@google.com>
Tested-by: build bot (Jenkins)
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>

src/soc/intel/skylake/systemagent.c

@@ -417,6 +417,7 @@ static const unsigned short systemagent_ids[] = {
 	MCH_SKYLAKE_ID_H,
 	MCH_SKYLAKE_ID_H_EM,
 	MCH_KABYLAKE_ID_U,
+	MCH_KABYLAKE_ID_U_R,
 	MCH_KABYLAKE_ID_Y,
 	MCH_KABYLAKE_ID_H,
 	0