Imre Vadász b22fe30db1 [iwm] Sync iwm_nvm_read_chunk() function with Linux iwlwifi.
This fixes an error handling detail in iwm_nvm_read_chunk(), where an
error response from the firmware for an NVM read shouldn't be fatal if
the offset was non-zero.

Approved by:	adrian (mentor)
Obtained from:	DragonFlyBSD git 250a1c33fca1725121fe499f9cebc90267d209f9
Differential Revision:	https://reviews.freebsd.org/D8542
2016-11-17 20:00:20 +00:00
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