FROMLIST: Bluetooth: hci_qca: Remove redundant initializations to zero

The qca_data structure is allocated with kzalloc() and hence
zero-initialized. Remove a bunch of unnecessary explicit
initializations of struct members to zero.

(am from https://lore.kernel.org/patchwork/patch/1048028/

)

BUG=b:132147953
TEST=None

Change-Id: I68f750ee76e5e6053640afa4c764645ef4c47b0d
Signed-off-by: Matthias Kaehlcke <mka@chromium.org>
Reviewed-by: Balakrishna Godavarthi <bgodavar@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/+/1603081


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