soc/intel/skylake: Cleanup patch for Skylake SoC

Here is the list of items of code cleanup
1. Define TCO registers in smbus.h and not in pmc.h (as per EDS).
2. Include smbus.h wherever these TCO register defines were used.
3. Remove duplication of define in gpio_defs.h.
4. Remove unnecessary console.h include from memmap.h as no prints done.
5. Remove unnecessary comment from pch.c.

BUG=none
BRANCH=none
TEST=Built and boot kunimitsu.

Change-Id: Ibe6d2537ddde3c1c7f8ea5ada1bfaa9be79c0e3b
Signed-off-by: Barnali Sarkar <barnali.sarkar@intel.com>
Reviewed-on: https://review.coreboot.org/16027
Tested-by: build bot (Jenkins)
Reviewed-by: Rizwan Qureshi <rizwan.qureshi@intel.com>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-by: Subrata Banik <subrata.banik@intel.com>

src/soc/intel/skylake/finalize.c

@@ -28,7 +28,7 @@
 #include <soc/pci_devs.h>
 #include <soc/pcr.h>
 #include <soc/pm.h>
-#include <soc/pmc.h>
+#include <soc/smbus.h>
 #include <soc/spi.h>
 #include <soc/systemagent.h>
 #include <device/pci.h>