Sundström 1.0 Alpha 4

Merge pull request #7 from eigendude/uart2

linux: Enable serial console on UART2

Sundström 1.0 Alpha 3

Merge pull request #5 from eigendude/hdmi

linux: Enable DRM driver for HDMI support (REVISIT)

Sundström 1.0 Alpha 2 rev 2

Merge pull request #4 from eigendude/kernel-4.19.24

kernel: 4.19.24

Sundström 1.0 Alpha 2

Merge pull request #3 from eigendude/gps

Linux: Enable Prolific PL2023 serial port driver for GPS

Sundström 1.0 Alpha 1

Merge pull request #1 from eigendude/overlay

Linux: Enable overlay filesystem support