Merge r312651 into the 5.0 branch : Fix ARM bare metal driver to support atomics

[tstellar]

Bugzilla Link	35322
Resolution	FIXED
Resolved on	Nov 15, 2017 14:34
Version	5.0
OS	All
Blocks	#33840 #34085
CC	@TNorthover
Fixed by commit(s)	r312651 r314464

Extended Description

Is it OK to merge the following revision(s) to the 5.0 branch?

[tstellar]

assigned to @tstellar

[tstellar]

https://reviews.llvm.org/rL312651

[TNorthover]

I think it's reasonable for 5.0.

[tstellar]

Merged: r314464