power: smb5: update IRQ configuration

Update IRQ handlers for all charger peripheral to ensure
only required IRQ handlers are registered.

While at it, configure few IRQs as wakeup capable.

Change-Id: I04f6017a4940baa2539c007d6f17427b2b4db86f
Signed-off-by: Ashay Jaiswal <ashayj@codeaurora.org>