locking/atomic: docs: Add atomic operations to the driver basic API documentation

Add the generated atomic headers to driver-api/basics.rst in order to
provide documentation for the Linux kernel's atomic operations.

At the same time, dtop the x86 atomic header, which provides kerneldoc
comments for some arch_atomic*_*() operations. The arch_atomic*_*()
operations are now purely an implenentation detail of the
raw_atomic*_*() ops, and outside of implementing the atomics, code
should use the raw_atomic*_*() forms.

[Mark: add atomic-{instrumented,long}.h, update commit message]
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Kees Cook <keescook@chromium.org>
Link: https://lore.kernel.org/r/20230605070124.3741859-27-mark.rutland@arm.com