wil6210: report boot loader error

Boot loader reports error starting from the struct v2.

Print error info before reset (power up state) in debug mode,
and print same info as error if target reset timed out.

Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>