kau <nbd@openwrt.org> 1278022190 +0200
committer John W. Linville <linville@tuxdriver.com> 1278092676 -0400

ath9k_hw: sanitize noise floor values properly on all chips

This refactors the noise floor range checks to make them generic,
and adds proper ranges for each supported chip type.

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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