move part of isobusfs code to the libj1939

Move part of isobusfs which can be reused by other applications to the
libj1939. By the way, reuse some of new libj1939 code in the j1939cat.

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

CMakeLists.txt

@@ -105,6 +105,10 @@ if(NOT ANDROID)
     libj1939.c
   )
 
+  target_link_libraries(j1939
+    PRIVATE can
+  )
+
   add_library(isobusfs SHARED
     isobusfs/isobusfs_cmn.c
     isobusfs/isobusfs_cmn_dh.c
@@ -134,7 +138,7 @@ if(NOT ANDROID)
   )
 
   target_link_libraries(isobusfs-cli
-    PRIVATE isobusfs can
+    PRIVATE isobusfs can j1939
   )
 
   add_executable(isobusfs-srv
@@ -148,7 +152,7 @@ if(NOT ANDROID)
   )
 
   target_link_libraries(isobusfs-srv
-    PRIVATE isobusfs can
+    PRIVATE isobusfs can j1939
   )
 
   install(TARGETS
@@ -167,7 +171,7 @@ foreach(name ${PROGRAMS})
 
   if("${name}" IN_LIST PROGRAMS_J1939)
     target_link_libraries(${name}
-      PRIVATE j1939
+      PRIVATE j1939 can
     )
   elseif("${name}" IN_LIST PROGRAMS_CANLIB)
     target_link_libraries(${name}