clk: Add devm_of_clk_add_hw_provider()/del_provider() APIs

Sometimes we only have one of_clk_del_provider() call in driver
error and remove paths, because we're missing a
devm_of_clk_add_hw_provider() API. Introduce the API so we can
convert drivers to use this and potentially reduce the amount of
code needed to remove providers in drivers.

Change-Id: I32d166bd3b35330b8230ab00464e6663c2f30f1b
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Git-commit: aa795c41d9cd41dc9c915dd1956ddd0e4ae44485
Git-repo: git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git


Signed-off-by: David Collins <collinsd@codeaurora.org>