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

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)

lib/cpus/aarch64/denver.S

@@ -372,3 +372,4 @@ denver_cpu_ops_wa DENVER_MIDR_PN5
 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