feat(ff-a): update FF-A version to v1.1

Bump the required FF-A version in framework and manifests to v1.1 as
upstream feature development goes.

Signed-off-by: Olivier Deprez <olivier.deprez@arm.com>
Change-Id: I89b2bd3828a13fc4344ccd53bc3ac9c0c22ab29f
6 files changed