clk: scpi: Unregister child clock providers on remove

clk: scpi: Unregister child clock providers on remove

SCPI clock providers are registered for each child node in
scpi_clk_add(), but scpi_clocks_remove() unregisters the parent node on
each iteration.

of_clk_del_provider() matches providers by the node used at registration
time, so passing the parent node leaves the child providers registered.
This leaks the provider allocations and the node references held by the
clock provider core.

Pass the child node to of_clk_del_provider() so the remove path matches
the probe path.

Fixes: cd52c2a4b5c4 ("clk: add support for clocks provided by SCP(System Control Processor)")
Signed-off-by: Stepan Ionichev <sozdayvek@gmail.com>
Link: https://patch.msgid.link/20260513090900.5323-1-sozdayvek@gmail.com
(sudeep.holla: Updated commit title and message a bit)
Signed-off-by: Sudeep Holla <sudeep.holla@kernel.org>