Add new format option when mixing EFF/SFF frame output

Added new view CANLIB_VIEW_INDENT_SFF flags to fix the sloppy output of
fprint_long_canframe() when mixing EFF & SFF CAN identifiers.

candump: Once an EFF frame is detected the indention is enabled.

Signed-off-by: Oliver Hartkopp <socketcan@hartkopp.net>

log2long.c

@@ -76,7 +76,7 @@ int main(int argc, char **argv)
 		}
 
 		sprint_long_canframe(ascframe, &cf,
-				     CANLIB_VIEW_ASCII,
+				     (CANLIB_VIEW_INDENT_SFF | CANLIB_VIEW_ASCII),
 				     maxdlen); /* with ASCII output */
 
 		printf("%s  %s  %s\n", timestamp, device, ascframe);