Support thread only mutex

The environment variable RSMI_MUTEX_THREAD_ONLY=1 to enable thread only mutex.
The RSMI_INIT_FLAG_THRAD_ONLY_MUTEX can also be pass to rsmi_init()
to enable thread only mutex.

Change-Id: I2d9844039b774e386f03bb9bb130d8c342504ea6

include/rocm_smi/rocm_smi.h

@@ -149,6 +149,7 @@ typedef enum {
                                          //!< information can be retrieved. By
                                          //!< default, only AMD devices are
                                          //!<  enumerated by RSMI.
+  RSMI_INIT_FLAG_THRAD_ONLY_MUTEX = 0x400000000000000,   //!< The mutex limit to thread
   RSMI_INIT_FLAG_RESRV_TEST1 = 0x800000000000000,  //!< Reserved for test
 } rsmi_init_flags_t;
 

include/rocm_smi/rocm_smi_main.h

@@ -88,6 +88,9 @@ class RocmSMI {
 
     void set_init_options(uint64_t options) {init_options_ = options;}
     uint64_t init_options() const {return init_options_;}
+    uint64_t is_thread_only_mutex() const {
+      return init_options_ & RSMI_INIT_FLAG_THRAD_ONLY_MUTEX;
+    }
 
     uint32_t euid() const {return euid_;}