Cortex-A55: Implement workaround for erratum 846532

Change-Id: Iacb6331c1f6b27340e71279f92f147ebbc71862f
Signed-off-by: Ambroise Vincent <ambroise.vincent@arm.com>
diff --git a/docs/cpu-specific-build-macros.rst b/docs/cpu-specific-build-macros.rst
index 65e1c84..85e5642 100644
--- a/docs/cpu-specific-build-macros.rst
+++ b/docs/cpu-specific-build-macros.rst
@@ -108,6 +108,9 @@
 -  ``ERRATA_A55_798797``: This applies errata 798797 workaround to Cortex-A55
    CPU. This needs to be enabled only for revision r0p0 of the CPU.
 
+-  ``ERRATA_A55_846532``: This applies errata 846532 workaround to Cortex-A55
+   CPU. This needs to be enabled only for revision <= r0p1 of the CPU.
+
 For Cortex-A57, the following errata build flags are defined :
 
 -  ``ERRATA_A57_806969``: This applies errata 806969 workaround to Cortex-A57