MAINTAINERS: Add entry for Cannon Lake

Cannon Lake, which covers Coffee Lake and Comet Lake, has been missing
from the maintainers file. Most unmerged patches for it have recently
been abandoned after 2+ years of inactivity.

Change-Id: Ic381f8efc4a423dca83c36605002aeeabf4bfdd9
Signed-off-by: Tim Crawford <tcrawford@system76.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/76416
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Eric Lai <eric_lai@quanta.corp-partner.google.com>
diff --git a/MAINTAINERS b/MAINTAINERS
index 0fa4135..2b015da 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -887,6 +887,10 @@
 F:	/src/soc/intel/braswell/
 F:	/src/vendorcode/intel/fsp/fsp1_1/braswell/
 
+INTEL CANNONLAKE SOC
+S:	Orphan
+F:	src/soc/intel/cannonlake/
+
 INTEL DENVERTON-NS SOC
 M:	Jeff Daly <jeffd@silicom-usa.com>
 M:	Vanessa Eusebio <vanessa.f.eusebio@intel.com>