added kernel module to track tach pulse spacing and total pulse counts
kernel module should be build as an external package and loaded at boot using init.d S03Modules
removed modules loading of BCM2835-spi, cdc_acm, and mcp320x -- they are now built into the kernel
Fixed the loading of the linux-defconfig. Should now be loaded from board/volvodash/volvodash_linux_defconfig -- this might have caused issues if building from a clean slate -- should have caught this earlier
filled in some missing documentation in config.h
added tach input settings to config and examples in config.ini that's copied over to /opt with the Qt app