BACKPORT: UPSTREAM: ath10k: add WMI_SERVICE_AVAILABLE_EVENT support

Add WMI_SERVICE_AVAILABLE_EVENT to extend WMI_SERVICE_READY_EVENT,
the 128bit service map in WMI_SERVICE_READY_EVENT is not enough
for firmware to notice new WLAN service to host driver. Hereby,
for thoese new WLAN service, firmware will notice host driver by
WMI_SERVICE_AVAILABLE_EVENT.

Signed-off-by: Alan Liu <alanliu@codeaurora.org>
Signed-off-by: Carl Huang <cjhuang@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
[dundi@codeaurora.org: Upstream code has some additional WMI_SERVICE_XXX
definitions. To keep WMI_SERVICE_SPOOF_MAC_SUPPORT as same as upstream,
backport these definitions too]
Git-commit: cea19a6ce8bf0518d156beea419d822021cc3705
Git-repo: git://git.kernel.org/pub/scm/linux/kernel/git/kvalo/ath.git


Change-Id: If6435324f0f716b7146d7f5697adcecfde30c26a
Signed-off-by: Dundi Raviteja <dundi@codeaurora.org>