clk: ti: export the omap2_clk_is_hw_omap call

There is one instance outside the TI clock driver that needs the info
whether a clock is an OMAP HW clock or not. Thus, move the function
declaration into the public header.

Signed-off-by: Tero Kristo <t-kristo@ti.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>

include/linux/clk/ti.h

@@ -243,6 +243,7 @@ struct ti_clk_ll_ops {
 
 #define to_clk_hw_omap(_hw) container_of(_hw, struct clk_hw_omap, hw)
 
+bool omap2_clk_is_hw_omap(struct clk_hw *hw);
 int omap2_clk_disable_autoidle_all(void);
 int omap2_clk_enable_autoidle_all(void);
 int omap2_clk_allow_idle(struct clk *clk);