Extend OP-TEE concept for virtualization and advanced topologies

The current OP-TEE concept document covers the basic usage of OP-TEE however
product groups will be looking to go far beyond that level. Update the concept
document to more fully cover the use virualization with OP-TEE and show how we
feel that the more advanced topologies envisioned could be supported.

Signed-off-by: Martyn Welch <martyn.welch@collabora.com>

dictionary.aspell

-personal_ws-1.1 en 49 utf-8
+personal_ws-1.1 en 63 utf-8
 ARMv
 ATF
 Apertis
 Debos
 Flatpak
 Flatpaks
+GPL
 GitLab
 GlobalPlatform
 HMI
 HTML
+HiKey
+IPAs
+KVM
 LFS
 MX
 OpenSSL
 PDF
 PDFs
 REE
+RK
+Renesas
+Rockchip
 SDK
+SMC
 SoC
 TAs
 TEE
@@ -26,6 +34,7 @@ UI
 UUID
 VM
 VMs
+VirtualBox
 WIP
 Xen
 YAML
@@ -34,6 +43,7 @@ backport
 backported
 bootloader
 bootloaders
+coprocessor
 cryptographic
 deduplicate
 deduplicated
@@ -44,6 +54,8 @@ hotfix
 namespace
 ospack
 prebuilt
+proxied
+proxying
 rebase
 reproducibility
 runtime
@@ -51,5 +63,7 @@ shortcode
 snapshotted
 snapshotting
 submitters
+topologies
 untrusted
 upstreamed
+virtualized