Docs: Release notes for v2.1.0

Build: Version update

Signed-off-by: Antonio de Angelis <antonio.deangelis@arm.com>
Change-Id: Ia469bd7f8165b2b2c591903502bff07a7007926e
Signed-off-by: Anton Komlev <anton.komlev@arm.com>
7 files changed