[PATCH] powerpc/fadump: update documentation about bootargs_append

[Hari Bathini]

Update ABI documentation about the introduction of the new sysfs
entry bootargs_append. This sysfs entry will be used to setup the
additional parameters to be passed to dump capture kernel.

Signed-off-by: Hari Bathini <hbathini at linux.ibm.com>
---

* This patch is a follow-up of below patch series, to update corresponding
  ABI documentation:

    https://lore.kernel.org/all/20240509115755.519982-1-hbathini@linux.ibm.com/

 Documentation/ABI/testing/sysfs-kernel-fadump | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/Documentation/ABI/testing/sysfs-kernel-fadump b/Documentation/ABI/testing/sysfs-kernel-fadump
index c586054657d6..2f9daa7ca55b 100644
--- a/Documentation/ABI/testing/sysfs-kernel-fadump
+++ b/Documentation/ABI/testing/sysfs-kernel-fadump
@@ -49,3 +49,10 @@ Description:	read only
 		memory add/remove events because elfcorehdr is now prepared in
 		the second/fadump kernel.
 User:		kexec-tools
+
+What:		/sys/kernel/fadump/bootargs_append
+Date:		May 2024
+Contact:	linuxppc-dev at lists.ozlabs.org
+Description:	read/write
+		This is a special sysfs file available to setup additional
+		parameters to be passed to capture kernel.
-- 
2.45.0