ath10k: don't show MSI registration warnings

Convert the MSI failure warnings to a debug message to make them less spammy.
Also convert the irq mode printout to a single print to make it easier to
show it only once.

Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
ath10k: make core boot messages more compact

We can show the same amount of information in one line. And then
it's easier to show this information only during first firmware boot
(see next patch).

For UART printouts there's already a message when they are enabled so
no need to have a print when they are disabled, that's the default
anyway.

Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
ath10k: show hardware and firmware info prints only once

This makes ath10k a lot less spammy by default.

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