rpmsg: Strcpy is not safe, use strscpy_pad() instead

JIRA: https://issues.redhat.com/browse/RHEL-78824

commit 99de650
Author: Saud Farooqui <farooqui_saud@hotmail.com>
Date:   Thu Jun 23 14:20:47 2022 +0500

    rpmsg: Strcpy is not safe, use strscpy_pad() instead

    Replace strcpy() with strscpy_pad() for copying the rpmsg
    device name in rpmsg_register_device_override().

    Reported-by: kernel test robot <lkp@intel.com>
    Signed-off-by: Saud Farooqui <farooqui_saud@hotmail.com>
    Link: https://lore.kernel.org/r/PA4P189MB14210AA95DCA3715AFA7F4A68BB59@PA4P189MB1421.EURP189.PROD.OUTLOOK.COM
    Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>

Signed-off-by: Jared Kangas <jkangas@redhat.com>

Author: rh-jkangas

drivers/rpmsg/rpmsg_core.c

@@ -604,7 +604,7 @@ int rpmsg_register_device_override(struct rpmsg_device *rpdev,
 	int ret;
 
 	if (driver_override)
-		strcpy(rpdev->id.name, driver_override);
+		strscpy_pad(rpdev->id.name, driver_override, RPMSG_NAME_SIZE);
 
 	dev_set_name(dev, "%s.%s.%d.%d", dev_name(dev->parent),
 		     rpdev->id.name, rpdev->src, rpdev->dst);