ath10k-ct: Update to 2019-04-08

ath10k-ct: Update to 2019-04-08

9cd701a4f028 ath10k-ct:  Add PN get/set API for wave-2 firmware.
5c8a4668323b ath10k-ct:  Support over-riding the power ctl table in eeprom
75e2705f31bb ath10k-ct:  CCA, eeprom, other changes.
a696e602a0fc ath10k-ct:  Attempt to fix-out-of-tree compile for 4.16
a2aec62262df ath10k:  Improve beacon tx status for 4.20 kernel.
be5c21a82b15 ath10k-ct:  Fix out-of-tree compile for 4.20, pull in stable changes for 4.19

Fixes compile errors when using the 4.20 flavour.
Also the amount of beacon errors seems to have dropped.

Tested on a Mikrotik RB912UAGS-5HPacD

Signed-off-by: Koen Vandeputte <koen.vandeputte@ncentric.com>