The reason you have an inspection is to find unknown damages. That said, the bank most likely didn't know of them and most (if not all) bank owned properties are sold 'as is' for this very reason. However, if you don't ask, they for sure won't reduce the price. Ask your Realtor to submit an addendum. Worse case, the bank says 'no'. Best case, they say 'yes'. You won't know if you don't ask. If they say 'no', then you have to decide if you want to move forward with the purchase or cancel contract (if you can per your purchase agreement). Your Realtor works for you so if you want them to submit an addendum, they have to.
I hope you have a Realtor working with you, they can make an argument to the bank about what was found, but I will tell you the bank will probably say the price reflects the condition -- which is like saying NO.