fix(cpus): workaround for Neoverse V2 erratum 2743011

Neoverse V2 erratum 2743011 is a Cat B erratum that applies to
all revisions <= r0p1 and is fixed in r0p2. The workaround is to
set CPUACTLR5_EL1[56:55] to 2'b01.

SDEN documentation:
https://developer.arm.com/documentation/SDEN2332927/latest

Signed-off-by: Bipin Ravi <bipin.ravi@arm.com>
Change-Id: I0e06ca723a1cce51fb027b7160f3dd06a4c93e64
diff --git a/docs/design/cpu-specific-build-macros.rst b/docs/design/cpu-specific-build-macros.rst
index 2b9e2b2..e5e135c 100644
--- a/docs/design/cpu-specific-build-macros.rst
+++ b/docs/design/cpu-specific-build-macros.rst
@@ -536,6 +536,10 @@
    CPU. This needs to be enabled for revisions r0p0 and r0p1. It is fixed in
    r0p2.
 
+-  ``ERRATA_V2_2743011``: This applies errata 2743011 workaround to Neoverse-V2
+   CPU. This needs to be enabled for revisions r0p0 and r0p1. It is fixed in
+   r0p2.
+
 -  ``ERRATA_V2_2779510``: This applies errata 2779510 workaround to Neoverse-V2
    CPU. This needs to be enabled for revisions r0p0 and r0p1. It is fixed in
    r0p2.