clk: sprd: add missing MODULE_DESCRIPTION() macro

make allmodconfig && make W=1 C=1 reports:
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/clk/sprd/clk-sprd.o

Add the missing invocation of the MODULE_DESCRIPTION() macro.
Signed-off-by: Jeff Johnson <quic_jjohnson@quicinc.com>
Link: https://lore.kernel.org/r/20240602-md-clk-sprd-v1-1-de0884ea6fc7@quicinc.comSigned-off-by: Stephen Boyd <sboyd@kernel.org>

drivers/clk/sprd/common.c

@@ -109,4 +109,5 @@ int sprd_clk_probe(struct device *dev, struct clk_hw_onecell_data *clkhw)
 }
 EXPORT_SYMBOL_GPL(sprd_clk_probe);
 
+MODULE_DESCRIPTION("Spreadtrum clock infrastructure");
 MODULE_LICENSE("GPL v2");