ath10k: add SDIO firmware for QCA9377 WiFi

This commit adds the SDIO firmware for ath10k/QCA9377 cards. I obtained
the file from the Boundary Devices repo [1] before discovering that Kale
Valo's repo [2] is the original source location. It has the same license
as the existing firmware-5.bin file. Support for QCA9377 WiFi was merged
for Linux 5.7 [3].

The upstream folder is named 'untested' though this is explained in the
QCA9377 support RFT post [3] and comments. I also show dmesg output in
the same comments. Support for QCA9377 WiFi was merged in Linux 5.7 [4].

Kale did say he would submit this in his next batch of things [5] but
that was ~5 months ago and I'm on a mission to drop out-of-tree patches
from the distro I maintain.

[1] https://github.com/boundarydevices/qca-firmware/tree/bd-sdmac-ath10k
[2] https://github.com/kvalo/ath10k-firmware/tree/master/QCA9377/hw1.0/untested
[3] https://patchwork.kernel.org/patch/11162833/
[4] 6e51b0e491
[5] https://lore.kernel.org/linux-firmware/871rn89qop.fsf@codeaurora.org/

Changes since v1:
- Show Kale's repo as the original upstream source
- Show Gary's Signed-off-by
- Reference QCA9377 suppoort RFT and comments

Signed-off-by: Gary Bisson <gary.bisson@boundarydevices.com>
Signed-off-by: Christian Hewitt <christianshewitt@gmail.com>
Signed-off-by: Josh Boyer <jwboyer@kernel.org>

WHENCE

@@ -3237,6 +3237,9 @@ File: ath10k/QCA9377/hw1.0/board-2.bin
 File: ath10k/QCA9377/hw1.0/firmware-5.bin
 Version: WLAN.TF.1.0-00002-QCATFSWPZ-5
 Licence: ath10k/QCA9377/hw1.0/notice_ath10k_firmware-5.txt
+File: ath10k/QCA9377/hw1.0/firmware-sdio-5.bin
+Version: WLAN.TF.1.1.1-00061-QCATFSWPZ-1
+Licence: ath10k/QCA9377/hw1.0/notice_ath10k_firmware-sdio-5.txt
 File: ath10k/QCA99X0/hw2.0/board.bin
 File: ath10k/QCA99X0/hw2.0/firmware-5.bin
 Version: 10.4.1.00030-1