staging: r8188eu: Make firmware buffer persistent
The present code reloads the firmware file from the disk every time the interface re-inits. Change to hold the firmware in memory, and only download to the device. Signed-off-by: NStas Sergeev <stsp@users.sourceforge.net> Signed-off-by: NLarry Finger <Larry.Finger@lwfinger.net> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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