msm: hotplug: Fix firing up all CPUs while resuming

Checks introduced in 3435c9fc98c71f287bb3256a53cb20921344521c  do not let us
fire up all cpus with online_cpu() function if max_cpus_online != 4.

Fix this by letting resume function to online all cpus independently.

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