msm: kgsl: Fix nice level for higher priority GPU start thread

Before, we were actually setting the lowest possible priority.

Signed-off-by: franciscofranco <franciscofranco.1990@gmail.com>
msm: kgsl: Schedule adreno_start in a high priority workqueue

Better safe than sorry. Also, return early if we didn't set a _wake_timeout.

Signed-off-by: franciscofranco <franciscofranco.1990@gmail.com>
Revert "ARM: SoC: convert MSM to SMP operations"

This reverts commit 0fb4e282d49a711bbaa3bfc601322561c9856543.
Revert "ARM: smp: remove wrapper functions"

This reverts commit 5b568b952e9214dd4036795495fd406cdf04c1f0.
Revert "ARM: smp: Make SMP operations mandatory"

This reverts commit 5195f808d026918b20e7a469082f16e671102337.