Re: [PATCH net V2] cxgb4: fix thermal zone build error

From: Ganesh Goudar <redacted>
Date: Thu, 15 Nov 2018 15:36:21 +0530

with CONFIG_THERMAL=m and cxgb4 as built-in build fails, and
'commit e70a57fa59bb ("cxgb4: fix thermal configuration dependencies")'
tries to fix it but when cxgb4i is made built-in build fails again,
use IS_REACHABLE instead of IS_ENABLED to fix the issue.

Fixes: e70a57fa59bb (cxgb4: fix thermal configuration dependencies)
Reported-by: Randy Dunlap <redacted>
Signed-off-by: Ganesh Goudar <redacted>
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V2: Fixing spelling mistake and avoid preprocessor conditionals.

Applied.