Add API for the memory type

Get the memory type from libdrm and add a new API.

Change-Id: I89327bca2ef860f2e3f4f6ca20def2331eba66c0

example/amd_smi_drm_example.cc

@@ -619,7 +619,7 @@ int main() {
                       << "\n\n";
 
             // Get frame buffer
-            amdsmi_vram_info_t vram_usage = {};
+            amdsmi_vram_usage_t vram_usage = {};
             ret = amdsmi_get_gpu_vram_usage(processor_handles[j], &vram_usage);
             CHK_AMDSMI_RET(ret)
             printf("    Output of amdsmi_get_gpu_vram_usage:\n");