Marvell: update SD8897 firmware to 15.68.4.p22

Update SD8897 uapsta firmware to version 15.28.4.p22 from Marvell.
This firmware fixed the over tx power issue and improved for some stable
issues.

BUG= chrome-os-partner:26904
TEST= Install on peach-pit/pi, check dmesg for fw versioin
      suspend_stress_test for > 1000 cycles

Change-Id: Ibaa2ed7cab4a0f6e64634776844107d963b1a9d6
Tested-by: Hyuckjoo Lee<hyuckjoo.lee@samsung.com>
Tested-by: Arijeet Ghosh<aghosh@marvell.com>
Reviewed-on: https://chromium-review.googlesource.com/190304
Reviewed-by: mukesh agrawal <quiche@chromium.org>
Tested-by: hyuckjoo lee <hyuckjoolee345@gmail.com>
Commit-Queue: Wonjoon Lee <woojoo.lee@samsung.com>
1 file changed