UPSTREAM: ath10k: wmi: add management tx by reference support over wmi

HL1.0 firmware branch, used in wcn3990, transmits management
frames by reference over WMI.

Add support for management tx by reference over WMI.

Signed-off-by: Rakesh Pillai <pillair@qti.qualcomm.com>
Signed-off-by: Govind Singh <govinds@qti.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
Git-commit: 1807da49733e69bf6a6abd32c1e9b9c3b1f647e8
Git-repo: git://git.kernel.org/pub/scm/linux/kernel/git/kvalo/ath.git


Change-Id: Iffbd556de51a2d85b2fb1c7fd4e9d80b8736364e
Signed-off-by: Dundi Raviteja <dundi@codeaurora.org>