clk: qcom: common: Return NULL from clk_hw OF provider

Return NULL in the cases where the clk_hw is not registered with the
clock provider, but the clock consumer still requests for a clock id.

Change-Id: Ibac88bf6a89956d8dd4fdb0775606d7659efc747
Signed-off-by: Taniya Das <tdas@codeaurora.org>
Link: https://lkml.kernel.org/r/20191014102308.27441-3-tdas@codeaurora.org


Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Git-repo: git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git


Git-commit: ffe37ede0a9eb524162c683f48da8558d5323ddb
Signed-off-by: Mike Tipton <mdtipton@codeaurora.org>