FROMLIST: dt-bindings: net: bluetooth: Add device property firmware-name for QCA6174

This patch adds an optional device property "firmware-name" to allow the
driver to load customized nvm firmware file based on this property.

(am from https://lore.kernel.org/patchwork/patch/1074028/

)

BUG=b:132147953
TEST=None

Change-Id: I650742cb69afe26e3c6498621b4e499f68e48e2b
Signed-off-by: Rocky Liao <rjliao@codeaurora.org>
Reviewed-by: Rob Herring <robh@kernel.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/+/1642726


Reviewed-by: Julan Hsu <julanhsu@google.com>
Reviewed-by: Sean Paul <seanpaul@chromium.org>
Tested-by: Julan Hsu <julanhsu@google.com>
Legacy-Commit-Queue: Commit Bot <commit-bot@chromium.org>