it83xx: Add eSPI virtual wires for SMI & SCI
it83xx: Add eSPI virtual wires for SMI & SCI

eSPI virtual wires for SMI & SCI are missing in ITE chip code,
added them to avoid compilation error if ESPI config is enabled.

BUG=b:77798195
BRANCH=none
TEST=make buildall -j

Change-Id: Ibfceb3d0fff56ccb145358a776cf76e45d92a311
Signed-off-by: Vijay Hiremath <006c712879a3af08bfdb5c2b8491a8b2d5fd73cd@intel.com>
Reviewed-on: https://chromium-review.googlesource.com/1009110
Commit-Ready: Vijay P Hiremath <006c712879a3af08bfdb5c2b8491a8b2d5fd73cd@intel.com>
Tested-by: Vijay P Hiremath <006c712879a3af08bfdb5c2b8491a8b2d5fd73cd@intel.com>
Reviewed-by: Aaron Durbin <af0622ab041e8b0f8e5819838dcc93898196e71f@chromium.org>
Reviewed-by: Jett Rink <9d4aef0593e6843318d99df31597fb6153b89787@chromium.org>
Reviewed-by: Dino Li <338d523ecf3700bd86eb9c34d220f91911d2a18c@ite.com.tw>

coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec