rocr: Add hsa_amd_portable_export_dmabuf_v2

The original version of hsa_amd_portable_export_dmabuf() did not
consider the conditions under which a dmabuf could be shared.
In the new version (hsa_amd_portable_export_dmabuf_v2()), the caller
can specify the flag HSA_AMD_DMABUF_MAPPING_TYPE_PCIE, which means they
want to share the dmabuf over PCIe. In that case, the new code will check
that if it is a PCIe GPU and it is not in a XGMI Hive then if
large-BAR is not supported, we will return an error.

runtime/hsa-runtime/hsacore.so.def

@@ -234,7 +234,6 @@ global:
 	hsa_amd_spm_release;
 	hsa_amd_spm_set_dest_buffer;
 	hsa_amd_portable_export_dmabuf;
-	hsa_amd_portable_export_dmabuf_v2;
 	hsa_amd_portable_close_dmabuf;
 	hsa_amd_vmem_address_reserve;
 	hsa_amd_vmem_address_reserve_align;
@@ -260,6 +259,7 @@ global:
 	hsa_amd_queue_get_info;
 	hsa_amd_enable_logging;
 	hsa_amd_signal_wait_all;
+	hsa_amd_portable_export_dmabuf_v2;
 local:
     *;
 };

runtime/hsa-runtime/inc/hsa_ext_amd.h

@@ -3155,9 +3155,9 @@ hsa_status_t hsa_amd_spm_set_dest_buffer(hsa_agent_t preferred_agent, size_t siz
  */
 
 /**
- * @brief Older version of hsa_amd_portable_export_dmabuf_v2
+ * @brief Older version of export dmabuf
  *
- * This is the same as calling hsa_amd_portable_export_dmabuf_v2() with the
+ * This is the same as calling the v2 version of export dmabuf with the
  * flags argument set to HSA_AMD_DMABUF_MAPPING_TYPE_NONE.
  *
  * @param[in] ptr Pointer to the allocation being exported.