ath10k-firmware: update Candela Tech firmware images

ath10k-firmware: update Candela Tech firmware images

This should fix a problem with 1560 MTU, 160Mhz on DFS channels,
some other small issues on < 5.2 kernels, and for 5.2 driver,
it pulls in some upstream stable fixes.

wave-1 firmware changes since last update:

  *  June 24, 2019: Try allocating low-priority WMI msgs if high-prio are not available.

  *  June 24, 2019: Init rate-ctrl to start at lowest rate instead of in the middle.  Hoping
                    this helps DHCP when station connects from a long distance.

wave-2:

  *  June 24, 2019  Start rate-ctrl at minimal values to help DHCP work better for far-away peers.

  *  July 24, 2019  Fix old regression that made /a (and probably /b/g) perform poorly, at least on
                    diet-compiled images.

  *  Aug 8, 2019  Improve a/b/g rate-ctrl by damping the PER swings caused by the all-or-nothing logic
                  of transmitting non-block-ack frames one at a time.

Signed-off-by: Koen Vandeputte <koen.vandeputte@ncentric.com>
(cherry picked from commit de5f0764883ad6a0767da58d7359f3e01aa91139)