Cortex-A57: Implement workaround for erratum 817169

Change-Id: I25f29a275ecccd7d0c9d33906e6c85967caa767a
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 d964da1..462ecc3 100644
--- a/docs/cpu-specific-build-macros.rst
+++ b/docs/cpu-specific-build-macros.rst
@@ -128,6 +128,9 @@
 -  ``ERRATA_A57_814670``: This applies errata 814670 workaround to Cortex-A57
    CPU. This needs to be enabled only for revision r0p0 of the CPU.
 
+-  ``ERRATA_A57_817169``: This applies errata 817169 workaround to Cortex-A57
+   CPU. This needs to be enabled only for revision <= r0p1 of the CPU.
+
 -  ``ERRATA_A57_826974``: This applies errata 826974 workaround to Cortex-A57
    CPU. This needs to be enabled only for revision <= r1p1 of the CPU.