clk: Document some devm_clk_bulk*() APIs

Add some new clk devm APIs that we've added over time to the devres
documentation.
Signed-off-by: Stephen Boyd <sboyd@kernel.org>

Documentation/driver-model/devres.txt

@@ -244,6 +244,10 @@ CLOCK
   devm_clk_get()
   devm_clk_get_optional()
   devm_clk_put()
+  devm_clk_bulk_get()
+  devm_clk_bulk_get_all()
+  devm_clk_bulk_get_optional()
+  devm_get_clk_from_childl()
   devm_clk_hw_register()
   devm_of_clk_add_hw_provider()
   devm_clk_hw_register_clkdev()