Enable D3D12 detection when using mingw-64

configure

@@ -27167,7 +27167,7 @@ printf %s "checking for d3d12 Windows SDK version... " >&6; }
 #include <winsdkver.h>
 #include <sdkddkver.h>
 #include <d3d12.h>
-ID3D12Device5 *device;
+ID3D12Device1 *device;
 #if WDK_NTDDI_VERSION <= 0x0A000008
 asdf
 #endif

configure.ac

@@ -3273,7 +3273,7 @@ CheckDIRECTX()
 #include <winsdkver.h>
 #include <sdkddkver.h>
 #include <d3d12.h>
-ID3D12Device5 *device;
+ID3D12Device1 *device;
 #if WDK_NTDDI_VERSION <= 0x0A000008
 asdf
 #endif