UPSTREAM: ath10k: wait for vdev delete response from firmware

When we add an interface immediately after removing
the interface the vdev deletion in firmware might not
have been completed. We need to synchronize the vdev creation
with the firmware.

Wait for vdev delete response from firmware when we
remove an interface.

Tested HW: WCN3990
Tested FW: WLAN.HL.2.0-01188-QCAHLSWMTPLZ-1

Signed-off-by: Rakesh Pillai <pillair@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Change-Id: Iea5367f7664399c178b5749f7f9f46d7730ee786
Git-commit: fe36e70f766ed99c5a140f8e265e81dd39897bb6
Git-repo: git://git.kernel.org/pub/scm/linux/kernel/git/kvalo/ath.git


[bpothuno@codeaurora.org: fix trivial merge conflicts]
Signed-off-by: Balaji Pothunoori <bpothuno@codeaurora.org>