Conditionaly define EMBER_AF_PLUGIN_REPORTING

[vivien-apple]

Problem

With the move to #3464, EMBER_AF_PLUGIN_REPORTING is enabled globally (see #3608)

It should be enable only if needed.

Proposed Solution

One possible solution would be to fix the templates helper and add an hasReportableAttributes method that will conditionally include this macro in gen_config.zapt

One other possible solution would be for the gen_config.zapt #define to be part of a global header that is generated at built-time. It may also enable the ability to automatically include the right dependencies for building depending on the set of choosen cluster.

[bzbarsky-apple]

I believe in practice in CHIP all attributes are reportable, and all nodes have attributes that can change (e.g. in Basic), so reporting is always needed...

[woody-apple]

Per @bzbarsky-apple 's comment above, closing, makes sense that reporting is always required. Please re-open if we're missing something!