[AVR] Add -MMD flag to generate depencencies files for S targets
[AVR] Add -MMD flag to generate depencencies files for S targets

stickbreaker/Arduino,me-no-dev/Arduino-1,Chris--A/Arduino,majenkotech/Arduino,me-no-dev/Arduino-1,me-no-dev/Arduino-1,Chris--A/Arduino,me-no-dev/Arduino-1,Chris--A/Arduino,majenkotech/Arduino,majenkotech/Arduino,stickbreaker/Arduino,me-no-dev/Arduino-1,majenkotech/Arduino,stickbreaker/Arduino,Chris--A/Arduino,stickbreaker/Arduino,stickbreaker/Arduino,Chris--A/Arduino,me-no-dev/Arduino-1,majenkotech/Arduino,majenkotech/Arduino,Chris--A/Arduino,majenkotech/Arduino,stickbreaker/Arduino,me-no-dev/Arduino-1,Chris--A/Arduino,me-no-dev/Arduino-1,Chris--A/Arduino,stickbreaker/Arduino