chipset_enable: Add support for Cannon Lake U Premium

Add support for Cannon Lake U Premium (CFL-U/WHL-U).
Same as discrete 300-series CNP PCH.

Tested on a WHL-U laptop w/unlocked IFD.

Change-Id: I8a318d63cf408a3b2cec436a3fa6e26cf8552ead
Signed-off-by: Matt DeVillier <matt.devillier@puri.sm>
Reviewed-on: https://review.coreboot.org/c/flashrom/+/34076
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Nico Huber <nico.h@gmx.de>
diff --git a/chipset_enable.c b/chipset_enable.c
index 427182c..1636f7c 100644
--- a/chipset_enable.c
+++ b/chipset_enable.c
@@ -1995,6 +1995,7 @@
 	{0x8086, 0x9d53, B_S,    NT,  "Intel", "Kaby Lake U Base",		enable_flash_pch100},
 	{0x8086, 0x9d56, B_S,    NT,  "Intel", "Kaby Lake Y Premium",		enable_flash_pch100},
 	{0x8086, 0x9d58, B_S,    NT,  "Intel", "Kaby Lake U Premium",		enable_flash_pch100},
+	{0x8086, 0x9d84, B_S,    DEP, "Intel", "Cannon Lake U Premium",		enable_flash_pch300},
 	{0x8086, 0xa141, B_S,    NT,  "Intel", "Sunrise Point Desktop Sample",	enable_flash_pch100},
 	{0x8086, 0xa142, B_S,    NT,  "Intel", "Sunrise Point Unknown Sample",	enable_flash_pch100},
 	{0x8086, 0xa143, B_S,    NT,  "Intel", "H110",				enable_flash_pch100},