fix(cpus): workaround for Cortex-A710 erratum 2282622

Cortex-A710 erratum 2282622 is a Cat B erratum that applies to
all revisions <=r2p1 and is still open. The workaround was earlier
applied to all revisions <= r2p0, this patch extends it to r2p1.
This was thought to have been fixed in r2p1 which is not the case.

SDEN documentation:
https://developer.arm.com/documentation/SDEN1775101/latest

Signed-off-by: Bipin Ravi <bipin.ravi@arm.com>
Change-Id: Iad38a7fe57bec3f2d8977995acd601dcd9ae69c0
diff --git a/docs/design/cpu-specific-build-macros.rst b/docs/design/cpu-specific-build-macros.rst
index c07a0aa..3b00bc7 100644
--- a/docs/design/cpu-specific-build-macros.rst
+++ b/docs/design/cpu-specific-build-macros.rst
@@ -503,8 +503,8 @@
    of the CPU and is fixed in r2p1.
 
 -  ``ERRATA_A710_2282622``: This applies errata 2282622 workaround to
-   Cortex-A710 CPU. This needs to be enabled for revisions r0p0, r1p0 and r2p0
-   of the CPU and is fixed in r2p1.
+   Cortex-A710 CPU. This needs to be enabled for revisions r0p0, r1p0, r2p0 and
+   r2p1 of the CPU and is still open.
 
 - ``ERRATA_A710_2291219``: This applies errata 2291219 workaround to
    Cortex-A710 CPU. This needs to be enabled for revisions r0p0, r1p0 and r2p0