clk: keystone: add missing MODULE_LICENSE

A randconfig build showed that two clk modules have no license tag:

WARNING: modpost: missing MODULE_LICENSE() in drivers/clk/keystone/gate.o
see include/linux/module.h for more information
WARNING: modpost: missing MODULE_LICENSE() in drivers/clk/keystone/pll.o
see include/linux/module.h for more information

Add the appropriate information from the comment at the start of the
two files.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Santosh Shilimkar <ssantosh@krenel.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>

drivers/clk/keystone/gate.c

@@ -266,3 +266,8 @@ static void __init of_keystone_psc_clk_init(struct device_node *node)
 }
 CLK_OF_DECLARE(keystone_gate_clk, "ti,keystone,psc-clock",
 					of_keystone_psc_clk_init);
+
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("Clock driver for Keystone 2 based devices");
+MODULE_AUTHOR("Murali Karicheri <m-karicheri2@ti.com>");
+MODULE_AUTHOR("Santosh Shilimkar <santosh.shilimkar@ti.com>");

drivers/clk/keystone/pll.c

@@ -338,3 +338,8 @@ static void __init of_pll_mux_clk_init(struct device_node *node)
 		pr_err("%s: error registering mux %s\n", __func__, clk_name);
 }
 CLK_OF_DECLARE(pll_mux_clock, "ti,keystone,pll-mux-clock", of_pll_mux_clk_init);
+
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("PLL clock driver for Keystone devices");
+MODULE_AUTHOR("Murali Karicheri <m-karicheri2@ti.com>");
+MODULE_AUTHOR("Santosh Shilimkar <santosh.shilimkar@ti.com>");