Add the ability to determine the Mali driver version.
This is the only way we can determine the video driver version with mali.
Really it's a good thing that they only push driver updates once every two years, makes it easy to determine what driver anybody is running.
Support checking for the Mali-T7xx line of GPUs.
They are similar enough that they will share bugs with their drivers, so make them fall under the same Mali-Txxx umbrella of bug issues.
If there is ever a need in the future for having separate bugs depending on family, we can support that then.
Merge pull request #263 from Sonicadvance1/DetermineMaliVersion

Add Mali driver version check and support of checking for Mali-T7xx