[PATCH v2 bpf-next 11/12] bpftool/docs: add description of btf dump C option

[Andrii Nakryiko <andriin@xxxxxx>]

Document optional **c** option for btf dump subcommand.

Cc: Quentin Monnet <quentin.monnet@xxxxxxxxxxxxx>
Signed-off-by: Andrii Nakryiko <andriin@xxxxxx>
---
 tools/bpf/bpftool/Documentation/bpftool-btf.rst | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/tools/bpf/bpftool/Documentation/bpftool-btf.rst b/tools/bpf/bpftool/Documentation/bpftool-btf.rst
index 2dbc1413fabd..1aec7dc039e9 100644
--- a/tools/bpf/bpftool/Documentation/bpftool-btf.rst
+++ b/tools/bpf/bpftool/Documentation/bpftool-btf.rst
@@ -19,10 +19,11 @@ SYNOPSIS
 BTF COMMANDS
 =============
 
-|	**bpftool** **btf dump** *BTF_SRC*
+|	**bpftool** **btf dump** *BTF_SRC* [**format** *FORMAT*]
 |	**bpftool** **btf help**
 |
 |	*BTF_SRC* := { **id** *BTF_ID* | **prog** *PROG* | **map** *MAP* [{**key** | **value** | **kv** | **all**}] | **file** *FILE* }
+|       *FORMAT* := { **raw** | **c** }
 |	*MAP* := { **id** *MAP_ID* | **pinned** *FILE* }
 |	*PROG* := { **id** *PROG_ID* | **pinned** *FILE* | **tag** *PROG_TAG* }
 
@@ -49,6 +50,10 @@ DESCRIPTION
                   .BTF section with well-defined BTF binary format data,
                   typically produced by clang or pahole.
 
+                  **format** option can be used to override default (raw)
+                  output format. Raw (**raw**) or C-syntax (**c**) output
+                  formats are supported.
+
 	**bpftool btf help**
 		  Print short help message.
 
-- 
2.17.1