Document changes and release 5.13.1pureos1 of linux-next-librem5

Signed-off-by: Martin Kepplinger <martin.kepplinger@puri.sm>
2 jobs for pureos/5.13.1pureos1 in 67 minutes and 25 seconds (queued for 2 seconds)
latest
Status Job ID Name Coverage
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passed #358911
librem5
build:aarch64

00:21:35

passed #358912
librem5:arm64
build:deb

01:07:25