docs(changelog): add missing scopes

Add missing platform scopes, this is based on contribution to platform
since 2.12.0 release.

Also update deprecation list with incorrect/invalid scopes used since
last release to avoid future usage.

Change-Id: I852da1c91669079eb7fc3fdfe1e4f7ae602d46cf
Signed-off-by: Govindraj Raja <govindraj.raja@arm.com>
1 file changed