Are you sure you learnt VHDL? As I understood it, the ATTiny isn't an FPGA but an 8-bit microcontroller.
Learning some form of assembly language at university is (probably) reasonably common.
Learning VHDL (for programming FPGAs) is less common - I did for my Computer Science degree, but this was about 15 years ago, so I don't know if it's still common.