qos: Pass the list of cpus with affected qos to notifer

Send the list of cpus whose qos has been affected along with the changed
value. Driver listening in for notifier can use this to apply the qos value
for the respective cpus.

Change-Id: I8f3c2ea624784c806c55de41cc7c7fcf8ebf02da
Signed-off-by: Mahesh Sivasubramanian <msivasub@codeaurora.org>