IVGCVSW-5605 Doxygen: Add remaining guides to doxygen

 * Integrates the debian package installation guide
 * Integrates the AndroidNDK guide
 * Integrates the cross compile guide

Signed-off-by: Jan Eilers <jan.eilers@arm.com>
Change-Id: I2243b15ee3f8e976789494199f12f3cc0fd5f00d
diff --git a/docs/02_build_guides.dox b/docs/02_build_guides.dox
index 35abf32..e61354d 100644
--- a/docs/02_build_guides.dox
+++ b/docs/02_build_guides.dox
@@ -6,11 +6,11 @@
 namespace armnn
 {
 /**
-@page buildguides Build Guides
+@page buildguides Installation and build Guides
 @tableofcontents
 
-This page links all guides to build and/or install Arm NN tools. Some of these guides are not hosted in our
-repository and will lead you to guides on
+This page links all guides to build and/or install Arm NN tools hosted in our repository.
+You can find additional tutorials on
 https://developer.arm.com/solutions/machine-learning-on-arm/developer-material/how-to-guides
 
 Arm NN is written using portable C++14 and the build system uses [CMake](https://cmake.org/), therefore it is possible
@@ -19,8 +19,17 @@
 Arm NN is managed by a single CMake project. That allows you to build multiple tools at once by combining the CMake
 options from different build guides.
 
+## Installation via APT Repository
+ - @subpage md_InstallationViaAptRepository
+
 ## TfLite Delegate build guide
  - @subpage md_delegate_BuildGuideNative
 
+## Android NDK and Arm NN
+ - @subpage md_BuildGuideAndroidNDK
+
+## Crosscompile Guide for Arm NN
+ - @subpage md_BuildGuideCrossCompilation
+
 **/
 }
\ No newline at end of file