File fix-aarch64-bitfield.patch of Package python-cffi

Index: cffi-0.8.2/c/_cffi_backend.c
===================================================================
--- cffi-0.8.2.orig/c/_cffi_backend.c
+++ cffi-0.8.2/c/_cffi_backend.c
@@ -3600,7 +3600,7 @@ static int complete_sflags(int sflags)
 #ifdef MS_WIN32
         sflags |= SF_MSVC_BITFIELDS;
 #else
-# ifdef __arm__
+# if defined(__arm__) || defined(__aarch64__)
         sflags |= SF_GCC_ARM_BITFIELDS;
 # else
         sflags |= SF_GCC_X86_BITFIELDS;