add j1939 datetime

Implement client and server side for SAE J1939-71:2002 - 5.3 pgn65254 -
Time/Date - TD.

Testing:
./j1939-timedate-srv -i vcan0 -a 0x70 &
./j1939-timedate-cli -i vcan0 -a 0x80 -r 0xff

Signed-off-by: Oleksij Rempel <linux@rempel-privat.de>

CMakeLists.txt

@@ -62,6 +62,11 @@ set(PROGRAMS_J1939
   testj1939
 )
 
+set(PROGRAMS_J1939_TIMEDATE
+  j1939-timedate-srv
+  j1939-timedate-cli
+)
+
 set(PROGRAMS_ISOBUSFS
   isobusfs-srv
   isobusfs-cli
@@ -159,6 +164,32 @@ if(NOT ANDROID)
     isobusfs-cli
     isobusfs-srv
     DESTINATION ${CMAKE_INSTALL_BINDIR})
+
+  set(PUBLIC_HEADER_j1939_TIMEDATE
+    j1939_timedate/j1939_timedate_cmn.h
+  )
+
+  add_executable(j1939-timedate-cli
+    j1939_timedate/j1939_timedate_cli.c
+  )
+
+  target_link_libraries(j1939-timedate-cli
+    PRIVATE can j1939
+  )
+
+  add_executable(j1939-timedate-srv
+    j1939_timedate/j1939_timedate_srv.c
+  )
+
+  target_link_libraries(j1939-timedate-srv
+    PRIVATE can j1939
+  )
+
+  install(TARGETS
+    j1939-timedate-cli
+    j1939-timedate-srv
+    DESTINATION ${CMAKE_INSTALL_BINDIR})
+
 endif()
 
 add_library(can STATIC