ATOMIC_* macros not working on QEMU

[Ivan-Velickovic]

Right now we have this piece of code:

libvmm/src/util/atomic.h

Lines 3 to 6 in af4a705

	// Qemu faults if you try load or store with a strict memorder on aarch64.
	#ifdef BOARD_qemu_arm_virt
	#define VMM_NO_ATOMICS
	#endif

that forces QEMU to use certain atomics as QEMU faults if you try to use compiler atomic builtins with certain memory orderings.

This does not make sense to me and should be looked into more, if it is an issue with QEMU then we should link to a bug report in the code.