ANDROID: GKI: genirq: Introduce irq_chip_get/set_parent_state calls

On certain QTI chipsets some GPIOs are direct-connect interrupts
to the GIC.

Even when GPIOs are not used for interrupt generation and interrupt
line is disabled, it does not prevent interrupt to get pending at
GIC_ISPEND. When drivers call enable_irq unwanted interrupt occures.

Introduce irq_chip_get/set_parent_state calls to clear pending irq
which can get called within irq_enable of child irq chip to clear
any pending irq before enabling.

Signed-off-by: Maulik Shah <mkshah@codeaurora.org>
Bug: 150233439
Change-Id: Ie8559657bd8da926cc741514809ffe9adbd73a80
Signed-off-by: Will McVicker <willmcvicker@google.com>
(cherry picked from commit d9233146224bdeec6a8a4cc684bec303e38fb9af)