FROMLIST: Bluetooth: hci_qca: Load customized NVM based on the device property

QCA BTSOC NVM is a customized firmware file and different vendors may
want to have different BTSOC configuration (e.g. Configure SCO over PCM
or I2S, Setting Tx power, etc.) via this file. This patch will allow
vendors to download different NVM firmware file by reading a device
property "firmware-name".

(am from https://lore.kernel.org/patchwork/patch/1084648/

)

BUG=b:132198825
TEST=None

Change-Id: Ifeb2477d850f5036585e46a3aa5e1737d91f6b5d
Signed-off-by: Rocky Liao <rjliao@codeaurora.org>
Signed-off-by: Harish Bandi <c-hbandi@codeaurora.org>
Signed-off-by: Vamsi Singamsetty <vamssi@codeaurora.org>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/third_party/kernel/+/1657972


Reviewed-by: Zhihong Yu <zhihongyu@chromium.org>
Commit-Queue: Zhihong Yu <zhihongyu@chromium.org>
Tested-by: Zhihong Yu <zhihongyu@chromium.org>