qcom: qpnp-smb2: Reset switcher_power_ok irq count when USBIN_UV fires

Currently when 3 switcher_power_ok interrupts are seen within a
second, the driver thinks that the switcher is reverse boosting
and suspends USB input path.

However, switcher_power_ok could happen 3 times within a second
while AICL is run from a charger collapse, a valid usecase which
ends up in an USB suspended state.

Note that AICL run caused switcher_power_ok is accompanied by an
USBIN_UV interrupt. Use that to distinguish reverse boost Vs AICL
runs. In particular, reset the switcher_power_ok interrupt count
updated by storm_watch when an USBIN_UV interrupt is seen.

Change-Id: I6817c66319f9af03ac28324a8d863876fdadafb3
Signed-off-by: Subbaraman Narayanamurthy <subbaram@codeaurora.org>