headers: Define IMAGE_FILE_MACHINE_ARM64

Signed-off-by: Martin Storsjö <martin@martin.st>

mingw-w64-headers/include/winnt.h

diff --git a/mingw-w64-headers/include/winnt.h b/mingw-w64-headers/include/winnt.h
index 878cdc3..45718c3 100644
--- a/mingw-w64-headers/include/winnt.h
+++ b/mingw-w64-headers/include/winnt.h
@@ -6037,6 +6037,7 @@
 #define IMAGE_FILE_MACHINE_ARM 0x01c0
 #define IMAGE_FILE_MACHINE_ARMV7 0x01c4
 #define IMAGE_FILE_MACHINE_ARMNT 0x01c4
+#define IMAGE_FILE_MACHINE_ARM64 0xaa64
 #define IMAGE_FILE_MACHINE_THUMB 0x01c2
 #define IMAGE_FILE_MACHINE_AM33 0x01d3
 #define IMAGE_FILE_MACHINE_POWERPC 0x01F0