util/mb/google: add support for brya

Add the file templates for creating a new variant of Brya.

BUG=b:177017247

Signed-off-by: Paul Fagerburg <pfagerburg@google.com>
Change-Id: If141d9b43ea5b845c1855f12e03e7d0cf535d2ec
Reviewed-on: https://review.coreboot.org/c/coreboot/+/54489
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>

util/mainboard/google/brya0/template/overridetree.cb

@@ -0,0 +1,6 @@
+chip soc/intel/alderlake
+
+        device domain 0 on
+        end
+
+end