Marvell/Drivers: MvBoardDesc: Introduce board description driver

This patch introduces a producer of MARVELL_BOARD_DESC_PROTOCOL, which
gets SoC description from ArmadaSoCDescLib, then based on dsc file,
provide only enabled hardware module controllers for the consumers,
which are typically controllers' drivers. Thanks to that
there is a separation between obtaining the platform description and
the drivers. A first example of the board description callback
is information about UTMI controllers and type.

Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Marcin Wojtas <mw@semihalf.com>
Reviewed-by: Leif Lindholm <leif.lindholm@linaro.org>