input: touchscreen: mcs6000: update driver to newer version

The older driver uses the function 'gpio_configure' which was removed from kernel source (2.6.37)

Change-Id: I9dec0001d59f821f27fbc4f7c3913dc88570a3df
Signed-off-by: Randolf Kastenmaier <randolf.kastenmaier@gmail.com>