mb/google/brya: Add new google brya mainboard

This commit is a stub for brya, which is a an Intel Alder Lake-P
reference platform.

BUG=b:173562731
TEST=util/abuild/abuild -p none -t google/brya -a -c max

Signed-off-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
Change-Id: Ia34130ff92a0a07063cb8e80527204b3a80184a0
Reviewed-on: https://review.coreboot.org/c/coreboot/+/47819
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
Reviewed-by: EricR Lai <ericr_lai@compal.corp-partner.google.com>

src/mainboard/google/brya/Kconfig.name

@@ -0,0 +1,4 @@
+config BOARD_GOOGLE_BRYA0
+	bool "Brya 0"
+	select BOARD_GOOGLE_BASEBOARD_BRYA
+	select BASEBOARD_BRYA_LAPTOP