Cortex-A76: workarounds for errata 1257314, 1262606, 1262888, 1275112

The workarounds for errata 1257314, 1262606, 1262888 and 1275112 are
added to the Cortex-A76 cpu specific file. The workarounds are disabled
by default and have to be explicitly enabled by the platform integrator.

Change-Id: I70474927374cb67725f829d159ddde9ac4edc343
Signed-off-by: Soby Mathew <soby.mathew@arm.com>
diff --git a/docs/cpu-specific-build-macros.rst b/docs/cpu-specific-build-macros.rst
index e1c89bf..493e07e 100644
--- a/docs/cpu-specific-build-macros.rst
+++ b/docs/cpu-specific-build-macros.rst
@@ -217,6 +217,18 @@
 -  ``ERRATA_A76_1220197``: This applies errata 1220197 workaround to Cortex-A76
    CPU. This needs to be enabled only for revision <= r2p0 of the CPU.
 
+-  ``ERRATA_A76_1257314``: This applies errata 1257314 workaround to Cortex-A76
+   CPU. This needs to be enabled only for revision <= r3p0 of the CPU.
+
+-  ``ERRATA_A76_1262606``: This applies errata 1262606 workaround to Cortex-A76
+   CPU. This needs to be enabled only for revision <= r3p0 of the CPU.
+
+-  ``ERRATA_A76_1262888``: This applies errata 1262888 workaround to Cortex-A76
+   CPU. This needs to be enabled only for revision <= r3p0 of the CPU.
+
+-  ``ERRATA_A76_1275112``: This applies errata 1275112 workaround to Cortex-A76
+   CPU. This needs to be enabled only for revision <= r3p0 of the CPU.
+
 DSU Errata Workarounds
 ----------------------