Permit unaligned accesses while executing the secure partition
payload, so that we don't have to modify existing code that we
will host there. (The UEFI spec explicitly permits unaligned
accesses)

Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>

Expose the timer registers that are accessible at EL0 per the
architecture to the SPM payload running in secure EL0. Note
that this requires NS_TIMER_SWITCH to be enable for all users
of this code.

Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>

Update some asserts that refer to #defines that only occur in
ARM platforms, preventing this code to be used on other platforms.
Instead, use a platform agnostic name, and update all the existing
users.

Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>

Enforce full include path for includes. Deprecate old paths.

The following folders inside include/lib have been left unchanged:

- include/lib/cpus/${ARCH}
- include/lib/el3_runtime/${ARCH}

The reason for this change is that having a global namespace for
includes isn't a good idea. It defeats one of the advantages of having
folders and it introduces problems that are sometimes subtle (because
you may not know the header you are actually including if there are two
of them).

For example, this patch had to be created because two headers were
called the same way: e0ea0928d5b7 ("Fix gpio includes of mt8173 platform
to avoid collision."). More recently, this patch has had similar
problems: 46f9b2c3a282 ("drivers: add tzc380 support").

This problem was introduced in commit 4ecca33988b9 ("Move include and
source files to logical locations"). At that time, there weren't too
many headers so it wasn't a real issue. However, time has shown that
this creates problems.

Platforms that want to preserve the way they include headers may add the
removed paths to PLAT_INCLUDES, but this is discouraged.

Change-Id: I39dc53ed98f9e297a5966e723d1936d6ccf2fc8f
Signed-off-by: Antonio Nino Diaz <antonio.ninodiaz@arm.com>

Rename files prefixed by sp_ to spm_.

Change-Id: Ie3016a4c4ac5987fe6fdd734c6b470c60954e23d
Signed-off-by: Antonio Nino Diaz <antonio.ninodiaz@arm.com>