[PATCH 25/39] docs: add some documentation dirs to the driver-api book

[Mauro Carvalho Chehab]

Those are subsystem docs, with a mix of kABI and user-faced
docs. While they're not split, keep the dirs where they are,
adding just a pointer to the main index.

Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@xxxxxxxxxx>
---
 Documentation/accounting/index.rst | 2 +-
 Documentation/block/index.rst      | 2 +-
 Documentation/hid/index.rst        | 2 +-
 Documentation/iio/index.rst        | 2 +-
 Documentation/index.rst            | 4 ++++
 5 files changed, 8 insertions(+), 4 deletions(-)

diff --git a/Documentation/accounting/index.rst b/Documentation/accounting/index.rst
index e1f6284b5ff3..9369d8bf32be 100644
--- a/Documentation/accounting/index.rst
+++ b/Documentation/accounting/index.rst
@@ -1,4 +1,4 @@
-:orphan:
+.. SPDX-License-Identifier: GPL-2.0
 
 ==========
 Accounting
diff --git a/Documentation/block/index.rst b/Documentation/block/index.rst
index 8cd226a0e86e..3fa7a52fafa4 100644
--- a/Documentation/block/index.rst
+++ b/Documentation/block/index.rst
@@ -1,4 +1,4 @@
-:orphan:
+.. SPDX-License-Identifier: GPL-2.0
 
 =====
 Block
diff --git a/Documentation/hid/index.rst b/Documentation/hid/index.rst
index af4324902622..737d66dc16a1 100644
--- a/Documentation/hid/index.rst
+++ b/Documentation/hid/index.rst
@@ -1,4 +1,4 @@
-:orphan:
+.. SPDX-License-Identifier: GPL-2.0
 
 =============================
 Human Interface Devices (HID)
diff --git a/Documentation/iio/index.rst b/Documentation/iio/index.rst
index 0593dca89a94..58b7a4ebac51 100644
--- a/Documentation/iio/index.rst
+++ b/Documentation/iio/index.rst
@@ -1,4 +1,4 @@
-:orphan:
+.. SPDX-License-Identifier: GPL-2.0
 
 ==============
 Industrial I/O
diff --git a/Documentation/index.rst b/Documentation/index.rst
index f898def833f4..879849b60c02 100644
--- a/Documentation/index.rst
+++ b/Documentation/index.rst
@@ -92,6 +92,10 @@ needed).
 
    driver-api/index
    core-api/index
+   accounting/index
+   block/index
+   hid/index
+   iio/index
    leds/index
    media/index
    networking/index
-- 
2.21.0