layout: Move generic layout functions into `layout.c`

Change-Id: If1edde70fc51e88e6e1c560d79a0d51941b9627c
Signed-off-by: Nico Huber <nico.h@gmx.de>
Reviewed-on: https://review.coreboot.org/c/flashrom/+/33514
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
diff --git a/layout.c b/layout.c
index 6e34814..6963e61 100644
--- a/layout.c
+++ b/layout.c
@@ -244,3 +244,44 @@
 
 	return lowest;
 }
+
+/**
+ * @addtogroup flashrom-layout
+ * @{
+ */
+
+/**
+ * @brief Mark given region as included.
+ *
+ * @param layout The layout to alter.
+ * @param name   The name of the region to include.
+ *
+ * @return 0 on success,
+ *         1 if the given name can't be found.
+ */
+int flashrom_layout_include_region(struct flashrom_layout *const layout, const char *name)
+{
+	size_t i;
+	for (i = 0; i < layout->num_entries; ++i) {
+		if (!strcmp(layout->entries[i].name, name)) {
+			layout->entries[i].included = true;
+			return 0;
+		}
+	}
+	return 1;
+}
+
+/**
+ * @brief Free a layout.
+ *
+ * @param layout Layout to free.
+ */
+void flashrom_layout_release(struct flashrom_layout *const layout)
+{
+	if (layout == get_global_layout())
+		return;
+
+	free(layout);
+}
+
+/** @} */ /* end flashrom-layout */