Added basic Linux support.

src/hw/dmi/DmiTools.h

@@ -22,6 +22,7 @@
 #define XMRIG_DMITOOLS_H
 
 
+#include <cstddef>
 #include <cstdint>
 
 
@@ -37,6 +38,12 @@ struct dmi_header
 };
 
 
+struct u64 {
+    uint32_t l;
+    uint32_t h;
+};
+
+
 template<typename T>
 inline T dmi_get(const uint8_t *data)                   { return *reinterpret_cast<const T *>(data); }