dibs: Remove KMSG_COMPONENT macro

The KMSG_COMPONENT macro is a leftover of the s390 specific "kernel message
catalog" from 2008 [1] which never made it upstream.

The macro was added to s390 code to allow for an out-of-tree patch which
used this to generate unique message ids. Also this out-of-tree doesn't
exist anymore.

The pattern of how the KMSG_COMPONENT is used was partially also used for
non s390 specific code, for whatever reasons.

Remove the macro in order to get rid of a pointless indirection.

[1] https://lwn.net/Articles/292650/

Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Acked-by: Alexandra Winter <wintera@linux.ibm.com>
Link: https://patch.msgid.link/20251126142242.2124317-1-hca@linux.ibm.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

Author: hcahca

drivers/dibs/dibs_main.c

@@ -6,8 +6,7 @@
  *
  *  Copyright IBM Corp. 2025
  */
-#define KMSG_COMPONENT "dibs"
-#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
+#define pr_fmt(fmt) "dibs: " fmt
 
 #include <linux/module.h>
 #include <linux/types.h>