Add kernel version flag supports event age

KFD kernel version 1.13 starts to support event age
tracking which help elimating unncessary busy wait.

-v2: update version check

Change-Id: Ib447ed6e0350f3110a4d6b9b80a0388000dd0e72
Signed-off-by: James Zhu <James.Zhu@amd.com>

src/core/inc/runtime.h

@@ -111,6 +111,7 @@ class Runtime {
   struct KfdVersion_t {
     HsaVersionInfo version;
     bool supports_exception_debugging;
+    bool supports_event_age;
   };
 
   /// @brief Open connection to kernel driver and increment reference count.
@@ -361,7 +362,12 @@ class Runtime {
 
   uint64_t sys_clock_freq() const { return sys_clock_freq_; }
 
-  void KfdVersion(const HsaVersionInfo& version) { kfd_version.version = version; }
+  void KfdVersion(const HsaVersionInfo& version) {
+    kfd_version.version = version;
+    if (version.KernelInterfaceMajorVersion == 1 &&
+      version.KernelInterfaceMinorVersion >= 14)
+      kfd_version.supports_event_age = true;
+  }
 
   void KfdVersion(bool exception_debugging) {
     kfd_version.supports_exception_debugging = exception_debugging;