Merge changes from topic "spmd" into integration

* changes:
SPMD: enable SPM dispatcher support
SPMD: hook SPMD into standard services framework
SPMD: add SPM dispatcher based upon SPCI Beta 0

Merge changes from topic "spmd" into integration

* changes:
SPMD: enable SPM dispatcher support
SPMD: hook SPMD into standard services framework
SPMD: add SPM dispatcher based upon SPCI Beta 0 spec
SPMD: add support to run BL32 in TDRAM and BL31 in secure DRAM on Arm FVP
SPMD: add support for an example SPM core manifest
SPMD: add SPCI Beta 0 specification header file

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SPMD: add SPM dispatcher based upon SPCI Beta 0 spec

This patch adds a rudimentary SPM dispatcher component in EL3.
It does the following:

- Consumes the TOS_FW_CONFIG to determine properties of th

SPMD: add SPM dispatcher based upon SPCI Beta 0 spec

This patch adds a rudimentary SPM dispatcher component in EL3.
It does the following:

- Consumes the TOS_FW_CONFIG to determine properties of the SPM core
component
- Initialises the SPM core component which resides in the BL32 image
- Implements a handler for SPCI calls from either security state. Some
basic validation is done for each call but in most cases it is simply
forwarded as-is to the "other" security state.

Signed-off-by: Achin Gupta <achin.gupta@arm.com>
Signed-off-by: Artsem Artsemenka <artsem.artsemenka@arm.com>
Change-Id: I7d116814557f7255f4f4ebb797d1619d4fbab590

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