Which Linux driver should I download for my AMD Radeon R6?

I have a Dell laptop with a AMD Radeon R6 graphics card.

The download's site for AMD drivers (http://support.amd.com/en-us/download) let's you either automatically detect and download the correct driver (only works in Windows), or download them manually.

I've tried finding the correct driver for my laptop by selecting, in the manual download section:

Step 1: Notebook graphics

But in Step 2 I get lost because there are Radeon R5, R7, and R9, but no R6.

I booted up Windows 10 and installed the automatic download tool. It downloaded the file:

radeon-crimson-15.12-win10-64bit.exe

Which driver should I download for my Ubuntu 64 bit system?

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