docs(amu): add AMU documentation
This change adds some documentation on the AMU and its purpose. This is
expanded on in later patches.
Change-Id: If2834676790938d8da5ea2ceba37b674f6cc0f01
Signed-off-by: Chris Kay <chris.kay@arm.com>
diff --git a/docs/global_substitutions.txt b/docs/global_substitutions.txt
index 24ac830..a70f15e 100644
--- a/docs/global_substitutions.txt
+++ b/docs/global_substitutions.txt
@@ -1,5 +1,7 @@
.. |AArch32| replace:: :term:`AArch32`
.. |AArch64| replace:: :term:`AArch64`
+.. |AMU| replace:: :term:`AMU`
+.. |AMUs| replace:: :term:`AMUs <AMU>`
.. |API| replace:: :term:`API`
.. |BTI| replace:: :term:`BTI`
.. |CoT| replace:: :term:`CoT`