firmware: qcom_scm-64: Move svc/cmd/owner into qcom_scm_desc

Service, command, and owner IDs are all part of qcom_scm_desc struct and
have no special reason to be a function argument (or hard-coded in the
case of owner [1]). Moving them to be part of qcom_scm_desc struct improves
readability.

[1]: Example of SCM function using owner vale other than hard-coded SIP value:
https://source.codeaurora.org/quic/la/kernel/msm-4.9/tree/drivers/soc/qcom/smcinvoke.c?h=kernel.lnx.4.9.r28-rel#n35

Tested-by: Brian Masney <masneyb@onstation.org> # arm32
Tested-by: Stephan Gerhold <stephan@gerhold.net>
Signed-off-by: Elliot Berman <eberman@codeaurora.org>
Link: https://lore.kernel.org/r/1578431066-19600-6-git-send-email-eberman@codeaurora.orgSigned-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>