msm: cpufreq: increase priority of thread that increases frequencies

When the cpufreq governors request for increase in frequency from kworker
threads, there is chance that the kworker thread is cpu starved due to
other high priority threads, leading to undesirable increase in frequency
ramp-up latency. Add the calling thread to SCHED_FIFO policy when
requesting for increase in frequency and restore back to original policy
after ramp-up is completed.

Change-Id: Ie4fa199b7f9087717cb94dfcc2eddea27cc0012b
Signed-off-by: Narayanan Gopalakrishnan <nargop@codeaurora.org>
Signed-off-by: Francisco Franco <franciscofranco.1990@gmail.com>

Conflicts:
	arch/arm/mach-msm/cpufreq.c
msm: idle-v7: flush non secure L1 cache lines for l2 GDHS LPM mode

It is LPM driver(HLOS) responsiblity to flush non secure lines of
L1 cache when the core decide to enter a LPM mode where core get
powered off. But current code is not flushing the non secure lines
of L1 cache when the core decide to enter into L2 GDHS LPM mode.
This change addresses the flushing of non secure lines of L1 cache.

CRs-fixed: 555905
Change-Id: I721947386091875994bcb71bd8b9b9b793a72349
Signed-off-by: Murali Nalajala <mnalajal@codeaurora.org>
Signed-off-by: franciscofranco <franciscofranco.1990@gmail.com>
Merge commit 'f0ba981' into franco