docs: take an initial stab at getting the PWM subsystem documented
docs: take an initial stab at getting the PWM subsystem documented

janick/libsoc,janick/libsoc,janick/libsoc,hlummis/libsoc,jackmitch/libsoc,hlummis/libsoc,jackmitch/libsoc,jackmitch/libsoc,hlummis/libsoc,hlummis/libsoc,janick/libsoc,yegorich/libsoc,yegorich/libsoc,yegorich/libsoc