perf: Add workaround for performance monitor irq burst

There is possibility of IRQ burst when back to back
performance monitor overflow interrupts raised.
Single interrupt line is used for all monitors on a CPU
and when multiple monitors are used simultaneously,
performance monitor overflow status register do no show
proper overflow status of each monitor. So add workaround
to disable all monitor overflow interrupts while handling
a monitor overflow interrupt.

Change-Id: I14a34b2258ddab19f8ed9a9e087129efd7b86ff4
Signed-off-by: Prasad Sodagudi <psodagud@codeaurora.org>
Signed-off-by: Srinivas Ramana <sramana@codeaurora.org>