firmware: qcom_scm: fix for missing listener id

__qcom_scm_invoke_smc() receives buffer to pass data received
in ret[2] but fails to copy data. Fixing the issue by copying
data into buffer.

Change-Id: Ia448f6c9ef680e8c1e98c6bf62f6f125d0dabddc
Signed-off-by: Dinesh K Garg <dineshg@codeaurora.org>