Add missing EFI_VARIABLE_... definition.

This adds the definition for EFI_VARIABLE_ENHANCED_AUTHENTICATED_ACCESS.

Signed-off-by: Peter Jones <pjones@redhat.com>

inc/efiapi.h

@@ -229,6 +229,7 @@ VOID
 #define EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS            0x00000010
 #define EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS 0x00000020
 #define EFI_VARIABLE_APPEND_WRITE                          0x00000040
+#define EFI_VARIABLE_ENHANCED_AUTHENTICATED_ACCESS	   0x00000080
 
 // Variable size limitation
 #define EFI_MAXIMUM_VARIABLE_SIZE           1024