Copying utility headers from optee_os.

Provides an interface for the following common tasks:
  - defining functions in assembly
  - setting function and variable attributes
  - safe integer operations

The files in this commit were forked from optee_os, keeping the
original license header intact:
    tag name: v3.10.0
    tagged commit: d1c635434c55b7d75eadf471bde04926bd1e50a7

From 'lib/libutils/ext/include/' of optee_os to
    'components/common/utils/include/':
        asm.S
        compiler.h
        util.h

Change-Id: I5d83618fa157a4b14f86e522c5def40c74c4ad95
Signed-off-by: Imre Kis <imre.kis@arm.com>
4 files changed