ArmPlatformPkg,EmbeddedPkg,MdeModulePkg: Move RealTimeClockLib header

RealTimeClockLib is an architectural implementation that is not
restricted to the embedded segment or any platform in particular.

So the header has been moved to MdeModulePkg.
And the package has been added to the relevant INF files.

Continuous-integration-options: PatchCheck.ignore-multi-package
Signed-off-by: Sachin Ganesh <sachinganesh@ami.com>
7 files changed