Legacy Slot Support for the Acer C740/Chromebook 11 and Acer C910/Chromebook 15

I’ve had a working updated legacy slot for the Acer C910/Chromebook 15 since mid-April, as some of you in the community may know. I took a few minutes tonight to incorporate that into the script, and I’ve also made it available for the Acer C740/Chromebook 11 (not that I’ve come across anyone who has one yet, but you never know). See the ROM Download page.