leds: rt4505: Add MODULE_DESCRIPTION()

Fix the 'make W=1" issue:

WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/leds/flash/leds-rt4505.o
Signed-off-by: Jeff Johnson <quic_jjohnson@quicinc.com>
Link: https://lore.kernel.org/r/20240517-md-leds-rt4505-v1-1-2f388ff6b672@quicinc.comSigned-off-by: Lee Jones <lee@kernel.org>

drivers/leds/flash/leds-rt4505.c

@@ -426,4 +426,5 @@ static struct i2c_driver rt4505_driver = {
 module_i2c_driver(rt4505_driver);
 
 MODULE_AUTHOR("ChiYuan Huang <cy_huang@richtek.com>");
+MODULE_DESCRIPTION("Richtek RT4505 LED driver");
 MODULE_LICENSE("GPL v2");