Update S1G min/max & initial voltage for tuna-kiwi platform.
While at it make below changes
1.Disable the unused rails for tuna boards.
2. Update always-on property for L3G for RCM kiwi platform
for FMD feature.
Change-Id: I92e01d48b5c3cb9f64b6aa7be37c0ebb27f378b7
Signed-off-by: Kavya Nunna <quic_knunna@quicinc.com>