Workaround for cortex-A76 errata 1286807

The workaround for Cortex-A76 errata #1286807 is implemented
in this patch.

Change-Id: I6c15af962ac99ce223e009f6d299cefb41043bed
Signed-off-by: Soby Mathew <soby.mathew@arm.com>
diff --git a/lib/cpus/cpu-ops.mk b/lib/cpus/cpu-ops.mk
index 6df85b7..e45d79d 100644
--- a/lib/cpus/cpu-ops.mk
+++ b/lib/cpus/cpu-ops.mk
@@ -226,6 +226,10 @@
 # only to revision <= r3p0 of the Cortex A76 cpu.
 ERRATA_A76_1275112	?=0
 
+# Flag to apply erratum 1286807 workaround during reset. This erratum applies
+# only to revision <= r3p0 of the Cortex A76 cpu.
+ERRATA_A76_1286807	?=0
+
 # Flag to apply T32 CLREX workaround during reset. This erratum applies
 # only to r0p0 and r1p0 of the Neoverse N1 cpu.
 ERRATA_N1_1043202	?=1
@@ -407,6 +411,10 @@
 $(eval $(call assert_boolean,ERRATA_A76_1275112))
 $(eval $(call add_define,ERRATA_A76_1275112))
 
+# Process ERRATA_A76_1286807 flag
+$(eval $(call assert_boolean,ERRATA_A76_1286807))
+$(eval $(call add_define,ERRATA_A76_1286807))
+
 # Process ERRATA_N1_1043202 flag
 $(eval $(call assert_boolean,ERRATA_N1_1043202))
 $(eval $(call add_define,ERRATA_N1_1043202))