fix(cpus): workaround for Neoverse N2 erratum 2779511

Neoverse N2 erratum 2779511 is a Cat B erratum that applies to
all revisions <=r0p2 and is fixed in r0p3. The workaround is to
set bit[47] of CPUACTLR3_EL1

SDEN documentation:
https://developer.arm.com/documentation/SDEN1982442/latest

Signed-off-by: Arvind Ram Prakash <arvind.ramprakash@arm.com>
Change-Id: Iaa0e30de8473ecb1df1fcca3a45904aac2e419b3
diff --git a/include/lib/cpus/aarch64/neoverse_n2.h b/include/lib/cpus/aarch64/neoverse_n2.h
index 16839b7..0d50854 100644
--- a/include/lib/cpus/aarch64/neoverse_n2.h
+++ b/include/lib/cpus/aarch64/neoverse_n2.h
@@ -43,6 +43,12 @@
 #define NEOVERSE_N2_CPUACTLR2_EL1_BIT_40		(ULL(1) << 40)
 
 /*******************************************************************************
+ * CPU Auxiliary Control register 3 specific definitions.
+ ******************************************************************************/
+#define NEOVERSE_N2_CPUACTLR3_EL1			S3_0_C15_C1_2
+#define NEOVERSE_N2_CPUACTLR3_EL1_BIT_47		(ULL(1) << 47)
+
+/*******************************************************************************
  * CPU Auxiliary Control register 5 specific definitions.
  ******************************************************************************/
 #define NEOVERSE_N2_CPUACTLR5_EL1			S3_0_C15_C8_0