Read OSTC3 GasSetting Values

Implements the reading of OSTC3 Gas Settings. These are settings
0x10 to 0x14

Signed-off-by: Joseph W. Joshua <joejoshw@gmail.com>
Implement saving of OSTC3 Gas Settings

Implements writing OSTC3 gas settings to the device.

Signed-off-by: Joseph W. Joshua <joejoshw@gmail.com>
Backup/Restore of OSTC3 Gas Settings

Implements backup and restore for OSTC3 Gas Settings.

Signed-off-by: Joseph W. Joshua <joejoshw@gmail.com>
Add reading and writing of OSTC 3 Dil values

Implements reading, writing and backup/restore of OSTC 3 Dil Values
(setting 0x15 to 0x19)

Signed-off-by: Joseph W. Joshua <joejoshw@gmail.com>