Fixed compiling kernel without WITH_FILESYSTEM

miosix/_doc/textdoc/Changelog.txt

...arm7_lpc2000/lpc2138_miosix_board/interfaces-impl/bsp.cpp

miosix/filesystem/console/console_device.cpp

miosix/filesystem/console/console_device.h

miosix/filesystem/fat32/ccsbcs.cpp

miosix/filesystem/fat32/diskio.cpp

miosix/filesystem/fat32/diskio.h

miosix/filesystem/fat32/fat32.cpp

miosix/filesystem/fat32/fat32.h

miosix/filesystem/fat32/ff.cpp

miosix/filesystem/fat32/ff.h

miosix/filesystem/fat32/wtoupper.cpp

miosix/filesystem/file.cpp

miosix/filesystem/file.h

miosix/filesystem/mountpointfs/mountpointfs.cpp

miosix/filesystem/mountpointfs/mountpointfs.h