msm: mpq8064: Dummy read to prevent false interrupt from triggering

The VBIF is capable of triggering a false bus error the first time
it performs a read. This fix creates a dummy read event that
happens every time that the VCAP is powered on that will ignore
the false positive VBIF interrupt error, so that during normal
operation the error can be properly identified.

Change-Id: Ie56e60faf2067fab7a05a0f16c2d840408c35035
Signed-off-by: Terence Hampson <thampson@codeaurora.org>