errata: workaround for Neoverse V1 errata 1925756

Neoverse V1 erratum 1925756 is a Cat B erratum present in r0p0, r1p0,
and r1p1 of the V1 processor core, and it is still open.

SDEN can be found here:
https://documentation-service.arm.com/static/60d499080320e92fa40b4625

Signed-off-by: Lauren Wehrmeister <lauren.wehrmeister@arm.com>
Change-Id: I6500dc98da92a7c405b9ae09d794d666e8f4ae52
diff --git a/docs/design/cpu-specific-build-macros.rst b/docs/design/cpu-specific-build-macros.rst
index 217686e..aa1a247 100644
--- a/docs/design/cpu-specific-build-macros.rst
+++ b/docs/design/cpu-specific-build-macros.rst
@@ -337,6 +337,9 @@
    CPU. This needs to be enabled only for revisions r0p0 and r1p0, it is fixed
    in r1p1.
 
+-  ``ERRATA_V1_1925756``: This applies errata 1925756 workaround to Neoverse-V1
+   CPU. This needs to be enabled for r0p0, r1p0, and r1p1, it is still open.
+
 -  ``ERRATA_V1_1940577``: This applies errata 1940577 workaround to Neoverse-V1
    CPU. This needs to be enabled only for revision r1p0 and r1p1 of the
    CPU.