interconnect: icc-clk: fix modular build

Fix building interconnect-clk as a module:
- Add EXPORT_SYMBOL_GPL to the exported functions
- Add MODULE_DESCRIPTION/_LICENSE/_AUTHOR

Reported-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Link: https://lore.kernel.org/r/20230519230122.3958816-1-dmitry.baryshkov@linaro.org
Signed-off-by: Georgi Djakov <djakov@kernel.org>

Author: lumag

drivers/interconnect/icc-clk.c

@@ -146,6 +146,7 @@ struct icc_provider *icc_clk_register(struct device *dev,
 
 	return ERR_PTR(ret);
 }
+EXPORT_SYMBOL_GPL(icc_clk_register);
 
 /**
  * icc_clk_unregister() - unregister a previously registered clk interconnect provider
@@ -166,3 +167,8 @@ void icc_clk_unregister(struct icc_provider *provider)
 			clk_disable_unprepare(qn->clk);
 	}
 }
+EXPORT_SYMBOL_GPL(icc_clk_unregister);
+
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("Interconnect wrapper for clocks");
+MODULE_AUTHOR("Dmitry Baryshkov <dmitry.baryshkov@linaro.org>");