Simplify the CMake doc targets

[derobins]

Now that we've dropped rocFile, there's no need for a CMake function to set up arbitrary library docs. This PR simplifies that documentation setup by assuming that we're only building hipFile docs. It also moves the setup from docs/CMakeLists.txt to cmake/AISDocumentation.cmake.

There are some changes to the targets:

• hipfile-doc no longer exists (just use doc)
• The doc target only exists if AIS_BUILD_DOCS is set

[Copilot]

Pull request overview

This PR streamlines the documentation build system by removing the generic ais_add_docs_target function and replacing it with a direct hipFile-specific implementation in a new CMake module. The changes eliminate the intermediate hipfile-doc target and make the doc target conditional on the AIS_BUILD_DOCS option.

Changes:

• Removed the generic docs function and docs/CMakeLists.txt file
• Created cmake/AISDocumentation.cmake with hipFile-specific documentation setup
• Hardcoded "hipFile" strings in Doxyfile.in instead of using CMake variables

Reviewed changes

Copilot reviewed 5 out of 5 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
docs/Doxyfile.in	Replaced CMake variables with hardcoded "hipFile" strings
docs/CMakeLists.txt	Deleted file containing the generic documentation function
cmake/AISDocumentation.cmake	New file with simplified hipFile-specific documentation setup
INSTALL.md	Updated documentation build instructions to mention AIS_BUILD_DOCS requirement
CMakeLists.txt	Replaced option declaration and subdirectory add with module include

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.