buildroot

package/rpi-userland: bump version

Fixes build with glibc-2.22.

Also fixes hard-to-trigger deadlock in highly threaded case, and fix
libraries dependencies.

Misc minor improvements in test programs as well.

Fixes #8446.

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Cc: gamadril.dev@gmail.com
Cc: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>