The EscReport message contains data fields that are much larger than they need to be.
Reducing those would significantly reduce the amount of traffic that is around on uORB.

Proposed changes:

uint32 esc_errorcount	-->  uint16 esc_errorcount	
int32 esc_rpm	        -->  int16 esc_rpm
float32 esc_temperature -->  int16 esc_temperature

FYI @teotomic-dd @MaEtUgR