button: convert long-press time to std::chrono

Signed-off-by: Patrick Williams <patrick@stwcx.xyz>
Change-Id: Ia97dc229b43e32a30e4e57881628ab408896dcfb
diff --git a/meson_config.hpp.in b/meson_config.hpp.in
index ed151f5..6610a44 100644
--- a/meson_config.hpp.in
+++ b/meson_config.hpp.in
@@ -1,5 +1,7 @@
 #pragma once
 
+#include <chrono>
+
 constexpr inline auto POWER_DBUS_OBJECT_NAME =
     "/xyz/openbmc_project/Chassis/Buttons/Power0";
 constexpr inline auto RESET_DBUS_OBJECT_NAME =
@@ -25,4 +27,5 @@
 
 constexpr inline auto POWER_BUTTON_PROFILE = @POWER_BUTTON_PROFILE@;
 constexpr inline auto ID_LED_GROUP = @ID_LED_GROUP@;
-constexpr inline const int LONG_PRESS_TIME_MS = @LONG_PRESS_TIME_MS@;
+constexpr inline const auto LONG_PRESS_TIME_MS =
+    std::chrono::milliseconds(@LONG_PRESS_TIME_MS@);