Update Linux to v5.4.2

Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/include/linux/cuda.h b/include/linux/cuda.h
index 056867f..45bfe9d 100644
--- a/include/linux/cuda.h
+++ b/include/linux/cuda.h
@@ -8,6 +8,7 @@
 #ifndef _LINUX_CUDA_H
 #define _LINUX_CUDA_H
 
+#include <linux/rtc.h>
 #include <uapi/linux/cuda.h>
 
 
@@ -16,4 +17,7 @@
 			void (*done)(struct adb_request *), int nbytes, ...);
 extern void cuda_poll(void);
 
+extern time64_t cuda_get_time(void);
+extern int cuda_set_rtc_time(struct rtc_time *tm);
+
 #endif /* _LINUX_CUDA_H */