not really normal.

burning oil as in out the tail pipe means bad turbo seals blowing it out or blowby past the rings. can also be bad stem seals allowing it to be burnt also when you let off.

you can try slightly thicker oil if it's consuming a little or full synthetic so it doesn't burn off/coke in the turbo.

i've been turbo'd for over 3 years and no oil burning or consumption...just checked it last week and it's right on the top dot after 3k miles since last change.