serial: msm_geni_serial: Register normal suspend instead of suspend_noirq

While executing suspend_noirq callbacks non-wakeup interrupts are
disabled, wake-up interrupts are enabled but their handling is
deferred till the completion of suspend_noirq stage.

UART console vote/unvote the resources in suspend_noirq/resume_noirq
stages. There is no issue wrt managing clk and pinctrl resources at
noirq stage however ICC BW voting can't be done at noirq stage.

ICC requests are converted to ack based requested for RPM driver, the
ack here is nothing but interrupt from IPCC driver and it can't be
processed at noirq stage, hence flow is indefinitely stuck in UART
suspend_noirq callback.

Change-Id: Ie279580795d3c85db4dc42766b0b2d9a8adb3f00
Signed-off-by: Akash Asthana <akashast@codeaurora.org>