Various fixes in `hardware/lm4f/cores/lm4f/`

 - pretty prints
    - fix tabs
    - fix spacing
    - clean up extra lines
    - `while(xyz){}` --> `while(xyz);`
 - `boolean.h`
    - use an stdbool implementation w/ our added `typedef uint8_t boolean;`
    - remove `typedef` from `Energia.h`
    - `#include` into `Energia.h`

Changes are mostly cosmetic, expect 0 bugs.