octeontx: add default packages for on-board devices
The Gateworks Newport boards supported by the octeontx target have
the following on-board devices:
- Gateworks System Controller
- GPIO buttons
- GPIO leds
- GPS PPS
- Accelerometer
- MCP251X CAN controller
Add kernel drivers for these devices in DEFAULT_PACKAGES
Signed-off-by: Tim Harvey <[email protected]>