[PATCH] arm64: add kdump.rst into index.rst

[Baoquan He <bhe@redhat.com>]

Document kdump.rst was added into Documentation/arm64/, but not listed
in Documentation/arm64/index.rst. That triggers below warning when
executing "make htmldoc":

>> Documentation/arm64/kdump.rst: WARNING: document isn't included in any toctree

Fix it now.

Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202306110549.ynH2Juok-lkp@intel.com/
Signed-off-by: Baoquan He <bhe@redhat.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
---
 Documentation/arm64/index.rst | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Documentation/arm64/index.rst b/Documentation/arm64/index.rst
index ae21f8118830..e58391557f00 100644
--- a/Documentation/arm64/index.rst
+++ b/Documentation/arm64/index.rst
@@ -15,6 +15,7 @@ ARM64 Architecture
     cpu-feature-registers
     elf_hwcaps
     hugetlbpage
+    kdump
     legacy_instructions
     memory
     memory-tagging-extension
-- 
2.34.1