lib: cpus: denver: add MIDR PN9 variant

This patch introduces support for PN9 variant for some
Denver based platforms.

Original change by: Hemant Nigam <hnigam@nvidia.com>

Signed-off-by: Kalyani Chidambaram Vaidyanathan <kalyanic@nvidia.com>
Change-Id: I331cd3a083721fd1cd1b03f4a11b32fd306a21f3
diff --git a/include/lib/cpus/aarch64/denver.h b/include/lib/cpus/aarch64/denver.h
index b665bc7..24b6a87 100644
--- a/include/lib/cpus/aarch64/denver.h
+++ b/include/lib/cpus/aarch64/denver.h
@@ -17,6 +17,7 @@
 #define DENVER_MIDR_PN6			U(0x4E0F0060)
 #define DENVER_MIDR_PN7			U(0x4E0F0070)
 #define DENVER_MIDR_PN8			U(0x4E0F0080)
+#define DENVER_MIDR_PN9			U(0x4E0F0090)
 
 /* Implementer code in the MIDR register */
 #define DENVER_IMPL			U(0x4E)
diff --git a/lib/cpus/aarch64/denver.S b/lib/cpus/aarch64/denver.S
index 834546b..83427b8 100644
--- a/lib/cpus/aarch64/denver.S
+++ b/lib/cpus/aarch64/denver.S
@@ -372,3 +372,4 @@
 denver_cpu_ops_wa DENVER_MIDR_PN6
 denver_cpu_ops_wa DENVER_MIDR_PN7
 denver_cpu_ops_wa DENVER_MIDR_PN8
+denver_cpu_ops_wa DENVER_MIDR_PN9