[mmc] add FAT over MMC test skeleton app
[mmc] change mmc_init to accept 'params' structure
[mmc] remove redundant semicolon
[mmc] add mmc hookup info to board_t. Arm for RDK_IDM
[mmc] add simple test to mmc_test - 'dir'
[boards] include spi.h from board.h
[boards] add mmc hookup information to lm3s6965 board info
[mmc] add default hookup for stellaris launchpad
[mmc] add default hookup for experimenter board (doesn't work though)
[mmc] fetch mmc hookup info from board info on mmc constructor. Ideally, the constructor should receive an object with optional override fields
[mmc] remove board_init.js files. now that mmc default params are available via board info