This patch implements the hci_qca driver side .coredump() callback to
trigger a devcoredump via sysfs.
Signed-off-by: Sai Teja Aluvala <quic_saluvala@quicinc.com>

v2 -> V3:
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Updated commit text

v1 -> V2:
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Updated to work with the updated HCI devcoredump API.
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>