wil6210: fix printouts for better readability

Reshuffle prints to consolidate firmware/hardware information
report upon card init

Convert print for unhandled MISC ISR bits to "debug" - it is
normal situation and not an "error"

Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>