Adds support for flow control on convergence branch.
Allocate Tx descriptors dynamically when vdev comes up.
Tx queue is paused and unpaused internally in host based on the
stop and start thresholds.
Changes are added under compilation flag QCA_LL_TX_FLOW_CONTROL_V2.
Change-Id: I0ccb80b0099f39efad52ccd7d47f2709fdee2a93
CRs-Fixed: 2040457
FW has moved to using v2 HTT_FW2WBM message format for Tx completions
Add corresponding change on Host.
Add missing code to free Tx descriptors for few HTT completion types
Also change the descriptor pool lock to spinlock_bh since transmit path
and completions typically run in tasklet/softirq context
Change-Id: I024d44243f95907f19086225f0f02a5cd64f4508
CRs-Fixed: 2068155
1. Unmap tso common segment only after receiving
completions for all the tso segments for a given
skb.
2. Keep a track of num of free tso descriptors available
in the pool of tso descriptors.
Change-Id: I01bdbb9e40b7259f77dbcfeec22c6d8cd0c0a6dd
CRs-Fixed: 2042950
