ARM: dts: msm: Fix modem watchdog bite irq number for MSM8996

Modem watchdog bite irq number has changed from 56 to 480 with
commit id "e5552ffc" (ARM: dts:
fix modem watchdog bite irq number for MSM8996.). Because of it
MPM driver is not allowing the idle XO shutdown due to interrupt
480 is enabled and not bypassed. Remove 56 from bypass irq list
and add correct interrupt number(480) to the list.

CRs-fixed: 918822
Change-Id: I198f163f263e31367b31049cc41fe7e1d5915d85
Signed-off-by: Murali Nalajala <mnalajal@codeaurora.org>