drm/bridge: add missing MODULE_DESCRIPTION() macros

make allmodconfig && make W=1 C=1 reports:
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/gpu/drm/bridge/lontium-lt9611.o
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/gpu/drm/bridge/lontium-lt9611uxc.o
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/gpu/drm/bridge/sil-sii8620.o
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/gpu/drm/bridge/sii9234.o

Add the missing invocations of the MODULE_DESCRIPTION() macro.
Signed-off-by: Jeff Johnson <quic_jjohnson@quicinc.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Maxime Ripard <mripard@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20240609-md-drivers-gpu-drm-bridge-v1-1-b582c5c815d7@quicinc.com

drivers/gpu/drm/bridge/lontium-lt9611.c

@@ -1195,4 +1195,5 @@ static struct i2c_driver lt9611_driver = {
 };
 module_i2c_driver(lt9611_driver);
 
+MODULE_DESCRIPTION("Lontium LT9611 DSI/HDMI bridge driver");
 MODULE_LICENSE("GPL v2");

drivers/gpu/drm/bridge/lontium-lt9611uxc.c

@@ -1016,6 +1016,7 @@ static struct i2c_driver lt9611uxc_driver = {
 module_i2c_driver(lt9611uxc_driver);
 
 MODULE_AUTHOR("Dmitry Baryshkov <dmitry.baryshkov@linaro.org>");
+MODULE_DESCRIPTION("Lontium LT9611UXC DSI/HDMI bridge driver");
 MODULE_LICENSE("GPL v2");
 
 MODULE_FIRMWARE(FW_FILE);

drivers/gpu/drm/bridge/sii9234.c

@@ -961,4 +961,5 @@ static struct i2c_driver sii9234_driver = {
 };
 
 module_i2c_driver(sii9234_driver);
+MODULE_DESCRIPTION("Silicon Image SII9234 HDMI/MHL bridge driver");
 MODULE_LICENSE("GPL");

drivers/gpu/drm/bridge/sil-sii8620.c

@@ -2384,4 +2384,5 @@ static struct i2c_driver sii8620_driver = {
 };
 
 module_i2c_driver(sii8620_driver);
+MODULE_DESCRIPTION("Silicon Image SiI8620 HDMI/MHL bridge driver");
 MODULE_LICENSE("GPL v2");