rocr: Expose PM4 emulation in the agent info (#1869)

Native AQL path in Windows requires extra logic, which has a conflict
with the implementation of Pm4 emulation and needs a detection in the client.

projects/rocr-runtime/runtime/hsa-runtime/core/runtime/amd_gpu_agent.cpp

@@ -1710,6 +1710,9 @@ hsa_status_t GpuAgent::GetInfo(hsa_agent_info_t attribute, void* value) const {
       }
       return HSA_STATUS_ERROR;
     }
+    case HSA_AMD_AGENT_INFO_PM4_EMULATION:
+      *((bool*)value) = properties_.Capability2.ui32.AqlEmulationPm4_;
+      break;
     default:
       return HSA_STATUS_ERROR_INVALID_ARGUMENT;
       break;

projects/rocr-runtime/runtime/hsa-runtime/inc/hsa_ext_amd.h

@@ -705,7 +705,11 @@ typedef enum hsa_amd_agent_info_s {
    * Queries the driver for clock counters of the agent.
    * The type of this attribute is hsa_amd_clock_counters_t.
    */
-  HSA_AMD_AGENT_INFO_CLOCK_COUNTERS = 0xA118
+  HSA_AMD_AGENT_INFO_CLOCK_COUNTERS = 0xA118,
+  /**
+   * The agent uses PM4 emulation mode.
+   */
+  HSA_AMD_AGENT_INFO_PM4_EMULATION = 0xA119
 } hsa_amd_agent_info_t;
 
 /**