drivers: video: Separate LCD notifier define

Signed-off-by: Pranav Vashi <neobuddy89@gmail.com>
msm: hotplug: Add compatibility for other suspend structures

* Thanks to @Dorimanx and @Alucard24
* Some kernels like this one has both LCD Notifier and
  Power Suspend, so prefer LCD Notifier in such case.

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