x86: Add chromebook_link board

This board is a 'bare' version of the existing 'link 'board. It does not
require coreboot to run, but is intended to start directly from the reset
vector.

This initial commit has place holders for a wide range of features. These
will be added in follow-on patches and series. So far it cannot be booted
as there is no ROM image produced, but it does build without errors.

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/board/google/chromebook_link/Kconfig b/board/google/chromebook_link/Kconfig
new file mode 100644
index 0000000..975d557
--- /dev/null
+++ b/board/google/chromebook_link/Kconfig
@@ -0,0 +1,15 @@
+if TARGET_CHROMEBOOK_LINK
+
+config SYS_BOARD
+	default "chromebook_link"
+
+config SYS_VENDOR
+	default "google"
+
+config SYS_SOC
+	default "ivybridge"
+
+config SYS_CONFIG_NAME
+	default "chromebook_link"
+
+endif