msm: qpnp: Make MSM_QPNP_INT depend on MSM_QPNP

MSM_QPNP provides the qpnp_get_irq() API that is used by
client drivers using QPNP interrupts.

Change-Id: I4556b07a2c6b8dfeda860ebac57be6eb14f216b1
Signed-off-by: Michael Bohan <mbohan@codeaurora.org>
Signed-off-by: David Brown <davidb@codeaurora.org>