Testbench required for mix_column.sv

[skudlur]

Description

Add a testbench for mix_column.sv to validate it's functionality. Please refer to this for a tutorial on writing a testbench.

Notes:

• You are eligible to get brownie points if you report back bugs with the module, add coverage reports, randomized testing and self-assertion tests.

[cuber2116]

can you assign this to me?

[skudlur]

@Om210 assigned

[ssether04]

can i get assigned if this is still open?

[skudlur]

@ssether04 assigned but stop spamming fgs

[Shreevardhancoder]

can i be assigned ?

[skudlur]

@Shreevardhancoder assigned

[Alley2717]

can i try