s390/sclp_async: add Kconfig option to specify the component id

Allow to specify the Compoment ID for Call Home via the kernel
configuration. This removes the need for distribution specific
patch against the sclp_async.c source file.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
diff --git a/drivers/s390/char/Kconfig b/drivers/s390/char/Kconfig
index db2cb1f..a5c6f7e 100644
--- a/drivers/s390/char/Kconfig
+++ b/drivers/s390/char/Kconfig
@@ -102,6 +102,16 @@
 	  want for inform other people about your kernel panics,
 	  need this feature and intend to run your kernel in LPAR.
 
+config SCLP_ASYNC_ID
+       string "Component ID for Call Home"
+       depends on SCLP_ASYNC
+       default "000000000"
+       help
+	 The Component ID for Call Home is used to identify the correct
+	 problem reporting queue the call home records should be sent to.
+
+	 If your are unsure, please use the default value "000000000".
+
 config HMC_DRV
 	def_tristate m
 	prompt "Support for file transfers from HMC drive CD/DVD-ROM"