zdev: rename site.h to zdev.h

Add zdev-specific definitions into a lightweight header file. Rather
than creating a new one, transform the existing "site.h" into "zdev.h"
to house all generic zdev-specific definitions that needs to be shared
between chzdev, lszdev and zdev_id going forward.

Signed-off-by: Vineeth Vijayan <vneethv@linux.ibm.com>
Reviewed-by: Peter Oberparleiter <oberpar@linux.ibm.com>
Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>

zdev/include/zdev.h

@@ -0,0 +1,31 @@
+/*
+ * zdev - Minimal header file containing generic definitions utilized by
+ * zdev-tools.
+ *
+ * Copyright IBM Corp. 2024
+ *
+ * s390-tools is free software; you can redistribute it and/or modify
+ * it under the terms of the MIT license. See LICENSE for details.
+ */
+
+#ifndef ZDEV_H
+#define ZDEV_H
+
+/**
+ * Currently zdev supports 10 sites. Which means, zdev support 10 different
+ * set of attributes which are specific to each site. When the user does
+ * not provide any site information, the common set will be used which is
+ * not specific to any site. So, total we have 11 persistent attribute sets
+ * Where,
+ * 0- 9: Site specific attributes
+ * 10: Common attributes which do not belong to any sites
+ */
+
+#define NUM_SITES 11
+#define NUM_USER_SITES (NUM_SITES - 1)
+#define SITE_FALLBACK NUM_USER_SITES
+
+/* Helper to find the availability of site-configuration */
+#define dev_site_configured(dev, x) (dev->site_specific[(x)].exists && \
+				     !dev->site_specific[(x)].deconfigured)
+#endif /* ZDEV_H */