drm: zte: use devm_of_platform_populate()

Use devm_of_platform_populate() to be sure that of_platform_depopulate
is called when removing the driver.

Signed-off-by: Benjamin Gaignard <[e-mail]>
CC: Shawn Guo <[e-mail]>
CC: David Airlie <[e-mail]>
CC: [e-mail]
CC: [e-mail]
Signed-off-by: Shawn Guo <[e-mail]>
Link: http://patchwork.freedesktop.org/patch/msgid/[e-mail]

drivers/gpu/drm/zte/zx_drm_drv.c

···
 	struct component_match *match = NULL;
 	int ret;
 
-	ret = of_platform_populate(parent, NULL, NULL, dev);
+	ret = devm_of_platform_populate(dev);
 	if (ret)
 		return ret;