errata: workaround for Cortex-A710 errata 1987031

Cortex-A710 erratum 1987031 is a Cat B erratum present in r0p0, r1p0,
and r2p0 of the Cortex-A710 processor core, and it is still open.

A710 SDEN: https://documentation-service.arm.com/static/61099dc59ebe3a7dbd3a8a88?token=

Signed-off-by: nayanpatel-arm <nayankumar.patel@arm.com>
Change-Id: I9bcff306f82328ad5a0f6e9836020d23c07f7179
diff --git a/lib/cpus/cpu-ops.mk b/lib/cpus/cpu-ops.mk
index b366167..ed507c8 100644
--- a/lib/cpus/cpu-ops.mk
+++ b/lib/cpus/cpu-ops.mk
@@ -405,6 +405,10 @@
 # to revisions r0p0, r1p0, and r1p1 of the Neoverse V1 cpu and is still open.
 ERRATA_V1_2139242   ?=0
 
+# Flag to apply erratum 1987031 workaround during reset. This erratum applies
+# to revisions r0p0, r1p0 and r2p0 of the Cortex-A710 cpu and is still open.
+ERRATA_A710_1987031	?=0
+
 # Flag to apply DSU erratum 798953. This erratum applies to DSUs revision r0p0.
 # Applying the workaround results in higher DSU power consumption on idle.
 ERRATA_DSU_798953	?=0
@@ -742,6 +746,10 @@
 $(eval $(call assert_boolean,ERRATA_V1_2139242))
 $(eval $(call add_define,ERRATA_V1_2139242))
 
+# Process ERRATA_A710_1987031 flag
+$(eval $(call assert_boolean,ERRATA_A710_1987031))
+$(eval $(call add_define,ERRATA_A710_1987031))
+
 # Process ERRATA_DSU_798953 flag
 $(eval $(call assert_boolean,ERRATA_DSU_798953))
 $(eval $(call add_define,ERRATA_DSU_798953))