Merge branch 'dpll' into next

Petr Oros  says:

====================

This patch series adds a new userspace tool for managing and monitoring
DPLL (Digital Phase-Locked Loop) devices via the Linux kernel DPLL
subsystem.

The series includes preparatory patches to move shared code to lib/ and
the main dpll tool implementation with full support for device/pin
management, monitoring, and JSON output.

====================

Signed-off-by: David Ahern <dsahern@kernel.org>