Image should boot 5.X kernel

Epic: https://source.puri.sm/Librem5/use-cases/issues/7

The phone will ultimately ship with a 5.X kernel, so we will need the image to be built and shipped with the latest linux-next kernel.

• Release linux-next kernel for testing
• Get all the branches together
• Trim defconfig
• Phone Essentials List
• Screen won't turn on after 3hrs+ of blanked and idle charging while powered on

added feature label

mentioned in issue #27 (closed)

mentioned in issue #15 (closed)

changed the description

mentioned in issue #29 (closed)

changed the description

marked the checklist item Trim defconfig as completed

changed the description

I think this issue can be closed since the main devkit image contains 5.2

closed

marked the checklist item Release linux-next kernel for testing as completed

changed the description

added verified-amber-phone-staging label

mentioned in commit 0163e04e