docs: archis: add a per-architecture features list

Add a feature list matrix for each architecture to their
respective Kernel books.
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/9c39d4dd93e05c0008205527d2c3450912f029ed.1606748711.git.mchehab+huawei@kernel.orgSigned-off-by: Jonathan Corbet <corbet@lwn.net>

Documentation/arm/features.rst

+.. SPDX-License-Identifier: GPL-2.0
+
+.. kernel-feat:: $srctree/Documentation/features arm

Documentation/arm/index.rst

@@ -23,6 +23,8 @@ ARM Architecture
    vlocks
    porting
 
+   features
+
 SoC-specific documents
 ======================
 

Documentation/arm64/features.rst

+.. SPDX-License-Identifier: GPL-2.0
+
+.. kernel-feat:: $srctree/Documentation/features arm64

Documentation/arm64/index.rst

@@ -24,6 +24,8 @@ ARM64 Architecture
     tagged-address-abi
     tagged-pointers
 
+    features
+
 .. only::  subproject and html
 
    Indices

Documentation/ia64/features.rst

+.. SPDX-License-Identifier: GPL-2.0
+
+.. kernel-feat:: $srctree/Documentation/features ia64

Documentation/ia64/index.rst

@@ -15,3 +15,5 @@ IA-64 Architecture
    irq-redir
    mca
    serial
+
+   features

Documentation/index.rst

@@ -160,7 +160,7 @@ implementation.
    ia64/index
    m68k/index
    mips/index
-   nios2/nios2
+   nios2/index
    openrisc/index
    parisc/index
    powerpc/index

Documentation/m68k/features.rst

+.. SPDX-License-Identifier: GPL-2.0
+
+.. kernel-feat:: $srctree/Documentation/features m68k

Documentation/m68k/index.rst

@@ -10,6 +10,8 @@ m68k Architecture
    kernel-options
    buddha-driver
 
+   features
+
 .. only::  subproject and html
 
    Indices

Documentation/mips/features.rst

+.. SPDX-License-Identifier: GPL-2.0
+
+.. kernel-feat:: $srctree/Documentation/features mips

Documentation/mips/index.rst

@@ -11,6 +11,8 @@ MIPS-specific Documentation
    booting
    ingenic-tcu
 
+   features
+
 .. only::  subproject and html
 
    Indices

Documentation/nios2/index.rst

+.. SPDX-License-Identifier: GPL-2.0
+
+==============================
+Nios II Specific Documentation
+==============================
+
+.. toctree::
+   :maxdepth: 2
+   :numbered:
+
+   nios2
+   features

Documentation/openrisc/features.rst

+.. SPDX-License-Identifier: GPL-2.0
+
+.. kernel-feat:: $srctree/Documentation/features openrisc

Documentation/openrisc/index.rst

@@ -10,6 +10,8 @@ OpenRISC Architecture
    openrisc_port
    todo
 
+   features
+
 .. only::  subproject and html
 
    Indices

Documentation/parisc/features.rst

+.. SPDX-License-Identifier: GPL-2.0
+
+.. kernel-feat:: $srctree/Documentation/features parisc

Documentation/parisc/index.rst

@@ -10,6 +10,8 @@ PA-RISC Architecture
    debugging
    registers
 
+   features
+
 .. only::  subproject and html
 
    Indices

Documentation/powerpc/features.rst

+.. SPDX-License-Identifier: GPL-2.0
+
+.. kernel-feat:: $srctree/Documentation/features powerpc

Documentation/powerpc/index.rst

@@ -34,6 +34,8 @@ powerpc
     vas-api
     vcpudispatch_stats
 
+    features
+
 .. only::  subproject and html
 
    Indices

Documentation/riscv/features.rst

+.. SPDX-License-Identifier: GPL-2.0
+
+.. kernel-feat:: $srctree/Documentation/features riscv

Documentation/riscv/index.rst

@@ -9,6 +9,8 @@ RISC-V architecture
     pmu
     patch-acceptance
 
+    features
+
 .. only::  subproject and html
 
    Indices

Documentation/s390/features.rst

+.. SPDX-License-Identifier: GPL-2.0
+
+.. kernel-feat:: $srctree/Documentation/features s390

Documentation/s390/index.rst

@@ -19,6 +19,8 @@ s390 Architecture
 
     text_files
 
+    features
+
 .. only::  subproject and html
 
    Indices

Documentation/sh/features.rst

+.. SPDX-License-Identifier: GPL-2.0
+
+.. kernel-feat:: $srctree/Documentation/features sh

Documentation/sh/index.rst

@@ -11,6 +11,8 @@ SuperH Interfaces Guide
     new-machine
     register-banks
 
+    features
+
 Memory Management
 =================
 

Documentation/sparc/features.rst

+.. SPDX-License-Identifier: GPL-2.0
+
+.. kernel-feat:: $srctree/Documentation/features sparc

Documentation/sparc/index.rst

@@ -9,3 +9,5 @@ Sparc Architecture
    adi
 
    oradax/oracle-dax
+
+   features

Documentation/x86/features.rst

+.. SPDX-License-Identifier: GPL-2.0
+
+.. kernel-feat:: $srctree/Documentation/features x86

Documentation/x86/index.rst

@@ -33,3 +33,4 @@ x86-specific Documentation
    i386/index
    x86_64/index
    sva
+   features

Documentation/xtensa/features.rst

+.. SPDX-License-Identifier: GPL-2.0
+
+.. kernel-feat:: $srctree/Documentation/features xtensa

Documentation/xtensa/index.rst

@@ -10,3 +10,5 @@ Xtensa Architecture
    atomctl
    booting
    mmu
+
+   features