vc/google/chromeos: Enable eSOL config with libgfx and uGOP

This patch introduces a new early sign-of-life config option when
libgfx or uGOP is enabled for early graphics initialization.

BUG=b:352651132
TEST=Able to build google/rex and google/tivviks

Change-Id: Ic8fe4ca5234de7f8e579f950f6ccbf750f4c7950
Signed-off-by: Jayvik Desai <jayvik@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/83705
Reviewed-by: Dinesh Gehlot <digehlot@google.com>
Reviewed-by: Subrata Banik <subratabanik@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/vendorcode/google/chromeos/Kconfig

@@ -102,5 +102,26 @@ config CHROMEBOOK_PLUS_LOGO_PATH
 	depends on CHROMEOS_FW_SPLASH_SCREEN
 	default "3rdparty/blobs/mainboard/\$(MAINBOARDDIR)/logo.bmp"
 
+config CHROMEOS_ENABLE_ESOL
+	def_bool FSP_UGOP_EARLY_SIGN_OF_LIFE || MAINBOARD_HAS_EARLY_LIBGFXINIT
+	help
+	  Early sign-of-life (eSOL) provides an early boot notification during
+	  critical firmware updates on Chrome OS devices, particularly for
+	  updates requiring a restart (e.g., CSE and FSP).
+
+	  eSOL Implementation Options:
+
+	  - FSP uGOP: Closed-source solution from Intel's Firmware Support
+	  Package.
+	  - libgfxinit: Open-source graphics initialization library.
+
+	  Platforms before Intel Meteor Lake are expected to use the libgfxinit.
+
+	  Devices from Intel Meteor Lake onwards will utilize the Intel FSP
+	  uGOP driver for eSOL.
+
+	  If your platform supports eSOL, enable it by selecting the
+	  appropriate option.
+
 endif # CHROMEOS
 endmenu