msm: 8092: Add QPNP interrupt support for 8092

QPNP is a Qualcomm SPMI based implementation that specifies 256
devices per SPMI slave ID, with up to 8 interrupts per device.
This brings the theoretical max interrupt support to 32768 per
bus for this architecture.

Change-Id: Ie6f8719e313e5f4e04d1bf87c5d4b238c6f34396
Signed-off-by: Ravi Kumar V <kumarrav@codeaurora.org>