ath10k: convert ath10k_pci_wake() to return

We should not try to access hw if wakeup fails so add
proper error checking for that. Also add the timeout lenght
to the warning message.

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

diff --cc drivers/net/wireless/ath/ath10k/ce.c
Simple merge

diff --cc drivers/net/wireless/ath/ath10k/pci.c
Simple merge

diff --cc drivers/net/wireless/ath/ath10k/pci.h
Simple merge