qpnp-smb2: expose forcing fcc/fv values via battery psy

CURRENT_QNOVO and VOLTAGE_QNOVO allow "forcing" fast charge
current and float voltage value, implemented around votable
such that one can have previlige in FCC and FV voting.

CRs-Fixed: 2004173
Change-Id: I2df30220aa89e15c4bace9980990f227218a5bdd
Signed-off-by: Harry Yang <harryy@codeaurora.org>