kernel: Enable macro protection for sulog

- Only enabled on kernel versions greater than 5.10.245

kernel/sulog.h

@@ -2,7 +2,15 @@
 #define __KSU_SULOG_H
 
 #include <linux/types.h>
+#include <linux/version.h>
 
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(5, 10, 245)
+#define __SULOG_GATE        1
+#else
+#define __SULOG_GATE        0
+#endif
+
+#if __SULOG_GATE
 extern struct timezone sys_tz;
 
 #define SULOG_PATH "/data/adb/ksu/log/sulog.log"
@@ -49,5 +57,6 @@ void ksu_sulog_report_syscall(uid_t uid, const char *comm, const char *syscall,
 
 int ksu_sulog_init(void);
 void ksu_sulog_exit(void);
+#endif // __SULOG_GATE
 
 #endif /* __KSU_SULOG_H */