sched: Support Energy Aware Scheduling irrespective of governor

This reverts commit 1e6b1214f107503 ("FROMLIST: sched/topology:
Make Energy Aware Scheduling depend on schedutil").
Right now, EAS gets disabled when governor set to anything other
than schedutil which affects scheduling decisions. To make sure
we always get better scheduling decions, EAS needs to be supported
irrespective of the governor.

Change-Id: I788faaacd477b3ff93ea9787c18a1235c8c3eb0b
Signed-off-by: Satya Durga Srinivasu Prabhala <satyap@codeaurora.org>
[shalagra@codeaurora.org: Fixed merge conflicts in port to 5.x]
Signed-off-by: Shaleen Agrawal <shalagra@codeaurora.org>