power: qpnp-vm-bms: Add extra logic to read STATUS1 register

For a synchronized read of the STATUS1 register, it needs
a write followed by a minimum 10ms delay. Perform these
operations before reading the register.

Change-Id: I370566d467d0a76a17412979ccad770dd8187780
Signed-off-by: Anirudh Ghayal <aghayal@codeaurora.org>