Now we are reading base mac, product name from eeprom data, and the data read from eeprom contains multiple "\0" characters at the end, need trim them to make the string clean and display correct.
**- Why I did it**
- Platform API implementation using sonic-cfggen to get platform name and SKU name, which will fail when the database is not available.
- Chassis name is not correctly assigned, it shall be assigned with EEPROM TLV "Product Name", instead of SKU name
- Chassis model is not implemented, it shall be assigned with EEPROM TLV "Part Number"
**- How I did it**
1. Chassis
> - Get platform name from /host/machine.conf
> - Remove get SKU name with sonic-cfggen
> - Get Chassis name and model from EEPROM TLV "Product Name" and "Part Number"
> - Add function to return model
2. EEPROM
> - Add function to return product name and part number
3. Platform
> - Init EEPROM on the host side, so also can get the Chassis name model from EEPROM on the host side.
* new platform api, chassis part
* Inject mlnx mlx libs to platform monitor
* address the review comments
* remove some confusing naming.
* Adjust the minor cause to a more human-readable way when rebooted by firmware
* address review comments
* expose host dir /host/reboot-cause to pmon docker so that the reboot causing by user command can be identified
* 1. Revert "expose host dir /host/reboot-cause to pmon docker so that the reboot causing by user command can be identified"
Since the only hardware-causing reboot should be handled by get_reboot_cause and the logic of handling reboot cause is about to move to the host side, no need to mount this dir to pmon docker.
This reverts commit 3feb96869d.
2. adjust log output by using sonic_daemon_base.daemon_base.Logger.
3. remove the logic of verifying /host/reboot-cause/ files.
4. fix typo.
* implement get_firmware_version and adjust the interfaces regarding components' version retrieving according to the Azure/sonic-platform-common#34
