msm: remote_spinlock: Add support for remote_spin_lock_rlock_id()

remote_spin_lock_rlock_id() and remote_spin_unlock_rlock() are
added to acquire/release a raw remote lock (without a local
spinlock). This is useful when ownership of a lock must transfer
between different execution environments, such as when a lock is
used to guarantee atomicity of a set of actions spread across
different execution environments.

Specifically, these APIs are added to support a new lock which
must be acquired in Linux but released by TrustZone software.

Because no local spinlock is acquired, each thread must use a
different ID so that only one thread can proceed through the
lock at a time.

Support for these new APIs is presently implemented only for
SFPB locks.

Change-Id: Ifc5b1f552090051d2e975107e56e21e22df08924
Signed-off-by: Matt Wagantall <mattw@codeaurora.org>

Conflicts:
	arch/arm/mach-msm/include/mach/remote_spinlock.h
	arch/arm/mach-msm/remote_spinlock.c
	include/linux/remote_spinlock.h