Record more GPU information

This cleans up the logging for GPU discovery a bit, and can
serve as a foundation to report GPU information in a future UX.

gpu/gpu_info.h

@@ -39,16 +39,19 @@ extern "C" {
 #endif
 
 #define GPU_ID_LEN 64
+#define GPU_NAME_LEN 96
 
 typedef struct mem_info {
   char *err;  // If non-nill, caller responsible for freeing
   char gpu_id[GPU_ID_LEN];
+  char gpu_name[GPU_NAME_LEN];
   uint64_t total;
   uint64_t free;
 
   // Compute Capability
   int major; 
   int minor;
+  int patch;
 } mem_info_t;
 
 void cpu_check_ram(mem_info_t *resp);