Move pcmcia crc32hash tool from Documentation to tools/pcmcia and
remove it from Documentation Makefile. Update location information
for this tool. Create a new Makefile to build pcmcia. It can be built
from top level directory or from pcmcia directory:

Run make -C tools/pcmcia or cd tools/pcmcia; make
Acked-by: NDominik Brodowski <linux@dominikbrodowski.net>
Acked-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: NJonathan Corbet <corbet@lwn.net>
Signed-off-by: NShuah Khan <shuahkh@osg.samsung.com>