ArmPlatformPkg: add missing library class declarations to .dec file
Add ArmPlatformLib, LcdPlatformlib and NorFlashPlatformLib to the
[LibraryClasses] section of ArmPlatformPkg.dec.
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Leif Lindholm <leif.lindholm@linaro.org>