scsi: ufs-msm: remove unnecessary callbacks of generic PHY framework

In this change unnecessary callbacks of the generic PHY framework
are removed and instead we call the required operations directly in
the driver.
The callbacks that were removed are:
phy_suspend(), phy_resume() and advertise_quirks()

In addition, one specific callback of the generic PHY is added:
restore_configuration() as complementary callback of save_configuration().

Change-Id: Iaf2be3ebff7a9978adae50c3f2617714106c40ac
Signed-off-by: Yaniv Gardi <ygardi@codeaurora.org>