Merge pull request #1886 from ambroise-arm/av/static-checks

Fix extra compilation warnings

Remove several warnings reported with W=2

Improved support for W=2 compilation flag by solving some nested-extern
and sign-compare warnings.

The libraries are compiling with warnings (which turn in

Remove several warnings reported with W=2

Improved support for W=2 compilation flag by solving some nested-extern
and sign-compare warnings.

The libraries are compiling with warnings (which turn into errors with
the Werror flag).

Outside of libraries, some warnings cannot be fixed.

Change-Id: I06b1923857f2a6a50e93d62d0274915b268cef05
Signed-off-by: Ambroise Vincent <ambroise.vincent@arm.com>

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Merge pull request #1784 from antonio-nino-diaz-arm/an/includes-arm

plat/arm: Cleanup of includes and drivers

plat/arm: scmi: Move to drivers/ folder

Change-Id: I8989d2aa0258bf3b50a856c5b81532d578600124
Signed-off-by: Antonio Nino Diaz <antonio.ninodiaz@arm.com>