include needed file for 64 bit defs

Upstream yocto appears to have removed a free include that provided the
def of the int64_t/uint64_t typedefs. This causes compile failures when
bringing in the new yocto.

Change-Id: I0407ee4fc0f20ceb85a1502a45bcd735b8a5dc14
Signed-off-by: Andrew Geissler <geissonator@yahoo.com>
diff --git a/power-supply/record_manager.hpp b/power-supply/record_manager.hpp
index 244ab3e..eae741d 100644
--- a/power-supply/record_manager.hpp
+++ b/power-supply/record_manager.hpp
@@ -1,5 +1,6 @@
 #pragma once
 
+#include <cstdint>
 #include <deque>
 #include <tuple>
 #include <vector>