Revert "ARM: SoC: convert MSM to SMP operations"

This reverts commit 9b9f8a5499cb13a6328e55259da420c9c12ea02a.
Revert "ARM: smp: remove wrapper functions"

This reverts commit 27d494b176e6553a94922e4e3a9adc7b9dc3a728.
Revert "ARM: smp: Make SMP operations mandatory"

This reverts commit 08f3ed0bb93a3f17df59e376950794b668771551.