Game Boy Advance: Add two more references

[Adobe-Android]

In the "Sources / Keep Reading" section under CPU, you have some excellent documentation linked. I propose adding two more that I found on Tonc but their links are dead so I've hunted down the correct new links for them.

https://developer.arm.com/documentation/ddi0210/c/

https://developer.arm.com/documentation/qrc0001/m/

[flipacholas]

Thanks. The second link is about Thumb-2 and the GBA only does Thumb, but it will come in handy for the PSVita.

[Adobe-Android]

The second link is about Thumb-2 and the GBA only does Thumb, but it will come in handy for the PSVita.

Interesting. Thanks for that clarification.