util: Consolidate ARRAY_SIZE() definitions

ARRAY_SIZE() was defined several times around the code-base.
Provide a single definition in util.h and include it where necessary.

Change-Id: Idc4cf030969

util: Consolidate ARRAY_SIZE() definitions

ARRAY_SIZE() was defined several times around the code-base.
Provide a single definition in util.h and include it where necessary.

Change-Id: Idc4cf030969ffc7f0928c6897a23962a70adcf05
Signed-off-by: Alexander Hansen <alexander.hansen@9elements.com>

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