msm: hotplug: Shrink ifdef usage

* There is no functional change in this commit.
* Add #ifdef wherever required for compilation.
* Shrink where it is already used.
* Reposition suspend_defer_time attribute.

https://github.com/dorimanx/Dorimanx-LG-G2-D802-Kernel/commit/0610ec687e802bc1f2ca94acc6ff19565a202d41

Signed-off-by: Pranav Vashi <neobuddy89@gmail.com>