firmware: qcom_scm: Order functions, definitions by svc/cmd

Definitions throughout qcom_scm are loosely grouped and loosely ordered.
Sort all the functions/definitions by service ID/command ID to improve
sanity when needing to add new functionality to this driver.

Change-Id: I698443e8e650d4bc9e65ac27d68c46d1e45ba8e3
Acked-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Elliot Berman <eberman@codeaurora.org>