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sgi575: Fix GCC 7 -Wformat-truncation error

Chris Kay requested to merge github/fork/CJKay/master into master

GCC 7 introduces the -Wformat-truncation warning and associated heuristics. This warning identifies potentially unexpected string truncation issues by statically range-checking the vararg inputs to snprintf().

For us, GCC seems to be unable to reliably identify the bounds of the inputs (cluster_idx, core_idx) even though we have static guarantees in place as those guarantees are made in a separate compilation unit from the one in which the error occurs.

This patch allows the compiler to inline the cluster/core count functions to ensure it can properly ascertain the proper bounds on the inputs to snprintf().

Change-Id: I23447732b579f0c02d739744c59cbeb5bf774d6f Signed-off-by: Chris Kay

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