clk: qcom: clk-alpha-pll: export slew pll ops

Export slew pll ops to allow clock drivers to be
compiled as modules.

Change-Id: I52e087ea1f0e3b8286255bae6ea65f411a7c4178
Signed-off-by: Veera Vegivada <vvegivad@codeaurora.org>

drivers/clk/qcom/clk-alpha-pll.c

@@ -4458,3 +4458,4 @@ const struct clk_ops clk_alpha_pll_slew_ops = {
 	.list_rate_vdd_level = clk_list_rate_vdd_level,
 #endif
 };
+EXPORT_SYMBOL(clk_alpha_pll_slew_ops);